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rfc:rfc3731

Network Working Group S. Hollenbeck Request for Comments: 3731 VeriSign, Inc. Category: Standards Track March 2004

     Extensible Provisioning Protocol (EPP) Domain Name Mapping

Status of this Memo

 This document specifies an Internet standards track protocol for the
 Internet community, and requests discussion and suggestions for
 improvements.  Please refer to the current edition of the "Internet
 Official Protocol Standards" (STD 1) for the standardization state
 and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

 Copyright (C) The Internet Society (2004).  All Rights Reserved.

Abstract

 This document describes an Extensible Provisioning Protocol (EPP)
 mapping for the provisioning and management of Internet domain names
 stored in a shared central repository.  Specified in XML, the mapping
 defines EPP command syntax and semantics as applied to domain names.

Table of Contents

 1.  Introduction. . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Relationship of Domain Objects and Host Objects . . . .   2
     1.2.  Conventions Used In This Document . . . . . . . . . . .   4
 2.  Object Attributes . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Domain and Host Names . . . . . . . . . . . . . . . . .   4
     2.2.  Contact and Client Identifiers. . . . . . . . . . . . .   5
     2.3.  Status Values . . . . . . . . . . . . . . . . . . . . .   5
     2.4.  Dates and Times . . . . . . . . . . . . . . . . . . . .   7
     2.5.  Validity Periods. . . . . . . . . . . . . . . . . . . .   7
     2.6.  Authorization Information . . . . . . . . . . . . . . .   7
     2.7.  Other DNS Resource Record Attributes. . . . . . . . . .   7
 3.  EPP Command Mapping . . . . . . . . . . . . . . . . . . . . .   8
     3.1.  EPP Query Commands. . . . . . . . . . . . . . . . . . .   8
           3.1.1.  EPP <check> Command . . . . . . . . . . . . . .   8
           3.1.2.  EPP <info> Command. . . . . . . . . . . . . . .  10
           3.1.3.  EPP <transfer> Query Command. . . . . . . . . .  16
     3.2.  EPP Transform Commands. . . . . . . . . . . . . . . . .  18
           3.2.1.  EPP <create> Command. . . . . . . . . . . . . .  19
           3.2.2.  EPP <delete> Command. . . . . . . . . . . . . .  21
           3.2.3.  EPP <renew> Command . . . . . . . . . . . . . .  23

Hollenbeck Standards Track [Page 1] RFC 3731 EPP Domain Name Mapping March 2004

           3.2.4.  EPP <transfer> Command. . . . . . . . . . . . .  24
           3.2.5.  EPP <update> Command. . . . . . . . . . . . . .  27
           3.2.6.  Offline Review of Requested Actions . . . . . .  29
 4.  Formal Syntax . . . . . . . . . . . . . . . . . . . . . . . .  32
 5.  Internationalization Considerations . . . . . . . . . . . . .  41
 6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  42
 7.  Security Considerations . . . . . . . . . . . . . . . . . . .  42
 8.  Acknowledgements. . . . . . . . . . . . . . . . . . . . . . .  42
 9.  References. . . . . . . . . . . . . . . . . . . . . . . . . .  43
     9.1.  Normative References. . . . . . . . . . . . . . . . . .  43
     9.2.  Informative References. . . . . . . . . . . . . . . . .  43
 10. Author's Address. . . . . . . . . . . . . . . . . . . . . . .  44
 11. Full Copyright Statement. . . . . . . . . . . . . . . . . . .  45

1. Introduction

 This document describes an Internet domain name mapping for version
 1.0 of the Extensible Provisioning Protocol (EPP).  This mapping is
 specified using the Extensible Markup Language (XML) 1.0 as described
 in [XML] and XML Schema notation as described in [XMLS-1] and
 [XMLS-2].
 [RFC3730] provides a complete description of EPP command and response
 structures.  A thorough understanding of the base protocol
 specification is necessary to understand the mapping described in
 this document.
 XML is case sensitive.  Unless stated otherwise, XML specifications
 and examples provided in this document MUST be interpreted in the
 character case presented to develop a conforming implementation.

1.1. Relationship of Domain Objects and Host Objects

 The EPP mapping for host objects is described in [RFC3732].  This
 document assumes that domain name objects have a superordinate
 relationship to subordinate host name objects.  For example, domain
 name "example.com" has a superordinate relationship to host name
 "ns1.example.com".  EPP actions (such as object transfers) that do
 not preserve this relationship MUST be explicitly disallowed.
 A host name object can be created in a repository for which no
 superordinate domain name object exists.  For example, host name
 "ns1.example.com" can be created in the ".example" repository so that
 DNS domains in ".example" can be delegated to the host.  Such hosts
 are described as "external" hosts in this specification since the
 name of the host does not belong to the name space of the repository
 in which the host is being used for delegation purposes.

Hollenbeck Standards Track [Page 2] RFC 3731 EPP Domain Name Mapping March 2004

 Whether a host is external or internal relates to the repository in
 which the host is being used for delegation purposes.  Whether an
 internal host is subordinate or not relates to a domain within the
 repository.  For example, host ns1.example1.com is a subordinate host
 of domain example1.com, but it is a not a subordinate host of domain
 example2.com.  ns1.example1.com can be used as a name server for
 example2.com.  In this case, ns1.example1.com MUST be treated as an
 internal host, subject to the rules governing operations on
 subordinate hosts within the same repository.
 Name server hosts for domain delegation can be specified as either
 references to existing host objects or as domain attributes that
 describe a host machine.  A server operator MUST use one name server
 specification form consistently.  A server operator that announces
 support for host objects in an EPP greeting MUST NOT allow domain
 attributes to describe a name server host machine.  A server operator
 that does not announce support for host objects MUST allow domain
 attributes to describe a name server host machine.  When domain
 attributes are used to describe a name server host machine, IP
 addresses SHOULD be required only as needed to generate DNS glue
 records.
 Name servers are specified within a <domain:ns> element.  This
 element MUST contain one or more <domain:hostObj> elements or one or
 more <domain:hostAttr> elements.  A <domain:hostObj> element contains
 the fully qualified name of a known name server host object.  A
 <domain:hostAttr> element contains the following child elements:
  1. A <domain:hostName> element that contains the fully qualified name

of a host.

  1. Zero or more OPTIONAL <domain:hostAddr> elements that contain the

IP addresses to be associated with the host. Each element MAY

    contain an "ip" attribute to identify the IP address format.
    Attribute value "v4" is used to note IPv4 address format.
    Attribute value "v6" is used to note IPv6 address format.  If the
    "ip" attribute is not specified, "v4" is the default attribute
    value.  IP address syntax requirements are described in Section
    2.5 of the EPP host mapping [RFC3732].
 Example host object name server elements for domain example.com:
 <domain:ns>
   <domain:hostObj>ns1.example.com</domain:hostObj>
   <domain:hostObj>ns1.example.net</domain:hostObj>
 </domain:ns>

Hollenbeck Standards Track [Page 3] RFC 3731 EPP Domain Name Mapping March 2004

 Example host attribute name server elements for domain example.com:
 <domain:ns>
   <domain:hostAttr>
     <domain:hostName>ns1.example.com</domain:hostName>
     <domain:hostAddr
      ip="v4">192.0.2.2</domain:hostAddr>
     <domain:hostAddr
      ip="v6">1080:0:0:0:8:800:200C:417A</domain:hostAddr>
   </domain:hostAttr>
   <domain:hostAttr>
     <domain:hostName>ns1.example.net</domain:hostName>
   </domain:hostAttr>
 </domain:ns>

1.2. Conventions Used In This Document

 The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
 "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
 document are to be interpreted as described in [RFC2119].
 In examples, "C:" represents lines sent by a protocol client and "S:"
 represents lines returned by a protocol server.  Indentation and
 white space in examples is provided only to illustrate element
 relationships and is not a REQUIRED feature of this protocol.

2. Object Attributes

 An EPP domain object has attributes and associated values that can be
 viewed and modified by the sponsoring client or the server.  This
 section describes each attribute type in detail.  The formal syntax
 for the attribute values described here can be found in the "Formal
 Syntax" section of this document and in the appropriate normative
 references.

2.1. Domain and Host Names

 The syntax for domain and host names described in this document MUST
 conform to [RFC952] as updated by [RFC1123].  At the time of this
 writing, RFC 3490 [RFC3490] describes a standard to use certain ASCII
 name labels to represent non-ASCII name labels.  These conformance
 requirements might change as a result of progressing work in
 developing standards for internationalized domain names.  A server
 MAY restrict allowable domain names to a particular top level domain,
 second level domain, or other domain for which the server is
 authoritative.  The trailing dot required when these names are stored
 in a DNS zone is implicit and MUST NOT be provided when exchanging
 host and domain names.

Hollenbeck Standards Track [Page 4] RFC 3731 EPP Domain Name Mapping March 2004

2.2. Contact and Client Identifiers

 All EPP contacts are identified by a server-unique identifier.
 Contact identifiers are character strings with a specified minimum
 length, a specified maximum length, and a specified format.  Contact
 identifiers use the "clIDType" client identifier syntax described in
 [RFC3730].

2.3. Status Values

 A domain object MUST always have at least one associated status
 value.  Status values can be set only by the client that sponsors a
 domain object and by the server on which the object resides.  A
 client can change the status of a domain object using the EPP
 <update> command.  Each status value MAY be accompanied by a string
 of human-readable text that describes the rationale for the status
 applied to the object.
 A client MUST NOT alter status values set by the server.  A server
 MAY alter or override status values set by a client subject to local
 server policies.  The status of an object MAY change as a result of
 either a client-initiated transform command or an action performed by
 a server operator.
 Status values that can be added or removed by a client are prefixed
 with "client".  Corresponding status values that can be added or
 removed by a server are prefixed with "server".  Status values that
 do not begin with either "client" or "server" are server-managed.
 Status Value Descriptions:
  1. clientDeleteProhibited, serverDeleteProhibited
 Requests to delete the object MUST be rejected.
  1. clientHold, serverHold
 DNS delegation information MUST NOT be published for the object.
  1. clientRenewProhibited, serverRenewProhibited
 Requests to renew the object MUST be rejected.
  1. clientTransferProhibited, serverTransferProhibited
 Requests to transfer the object MUST be rejected.

Hollenbeck Standards Track [Page 5] RFC 3731 EPP Domain Name Mapping March 2004

  1. clientUpdateProhibited, serverUpdateProhibited
 Requests to update the object (other than to remove this status) MUST
 be rejected.
  1. inactive
 Delegation information has not been associated with the object.
  1. ok
 This is the normal status value for an object that has no pending
 operations or prohibitions.  This value is set and removed by the
 server as other status values are added or removed.
  1. pendingCreate, pendingDelete, pendingRenew, pendingTransfer,

pendingUpdate

 A transform command has been processed for the object, but the action
 has not been completed by the server.  Server operators can delay
 action completion for a variety of reasons, such as to allow for
 human review or third-party action.  A transform command that is
 processed, but whose requested action is pending, is noted with
 response code 1001.
 With one exception, transform commands MUST be rejected when a
 pendingCreate, pendingDelete, pendingRenew, pendingTransfer, or
 pendingUpdate status is set.  The only exception is that a <transfer>
 command to approve, reject, or cancel a transfer MAY be processed
 while an object is in "pendingTransfer" status.
 When the requested action has been completed, the pendingCreate,
 pendingDelete, pendingRenew, pendingTransfer, or pendingUpdate status
 value MUST be removed.  All clients involved in the transaction MUST
 be notified using a service message that the action has been
 completed and that the status of the object has changed.
 "ok" status MUST NOT be combined with any other status.
 "pendingDelete" status MUST NOT be combined with either
 "clientDeleteProhibited" or "serverDeleteProhibited" status.
 "pendingRenew" status MUST NOT be combined with either
 "clientRenewProhibited" or "serverRenewProhibited" status.
 "pendingTransfer" status MUST NOT be combined with either
 "clientTransferProhibited" or "serverTransferProhibited" status.

Hollenbeck Standards Track [Page 6] RFC 3731 EPP Domain Name Mapping March 2004

 "pendingUpdate" status MUST NOT be combined with either
 "clientUpdateProhibited" or "serverUpdateProhibited" status.
 The pendingCreate, pendingDelete, pendingRenew, pendingTransfer, and
 pendingUpdate status values MUST NOT be combined with each other.
 Other status combinations not expressly prohibited MAY be used.

2.4. Dates and Times

 Date and time attribute values MUST be represented in Universal
 Coordinated Time (UTC) using the Gregorian calendar.  The extended
 date-time form using upper case "T" and "Z" characters defined in
 [RFC3339] MUST be used to represent date-time values as XML Schema
 does not support truncated date-time forms or lower case "T" and "Z"
 characters.

2.5. Validity Periods

 A domain name object MAY have a specified validity period.  If server
 policy supports domain object validity periods, the validity period
 is defined when a domain object is created, and it MAY be extended by
 the EPP <renew> or <transfer> commands.  As a matter of server
 policy, this specification does not define actions to be taken upon
 expiration of a domain object's validity period.
 Validity periods are measured in years or months with the appropriate
 units specified using the "unit" attribute.  Valid values for the
 "unit" attribute are "y" for years and "m" for months.  The minimum
 allowable period value is one decimal (1).  The maximum allowable
 value is ninety-nine decimal (99).  A server MAY support a lower
 maximum value.

2.6. Authorization Information

 Authorization information is associated with domain objects to
 facilitate transfer operations.  Authorization information is
 assigned when a domain object is created, and it might be updated in
 the future.  This specification describes password-based
 authorization information, though other mechanisms are possible.

2.7. Other DNS Resource Record Attributes

 While the DNS allows many resource record types to be associated with
 a domain, this mapping only explicitly specifies elements that
 describe resource records used for domain delegation and resolution.
 Facilities to provision other domain-related resource record types
 can be developed by extending this mapping.

Hollenbeck Standards Track [Page 7] RFC 3731 EPP Domain Name Mapping March 2004

 The provisioning method described in this mapping separates discrete
 data elements by data type.  This method of data definition allows
 XML Schema processors to perform basic syntax validation tasks,
 reducing ambiguity and the amount of parsing and syntax-checking work
 required of protocol processors.  Provisioning and extension methods
 that aggregate data into opaque strings are possible, but such
 methods SHOULD NOT be used because they impose additional parsing,
 interpretation, and validation requirements on protocol processors.

3. EPP Command Mapping

 A detailed description of the EPP syntax and semantics can be found
 in [RFC3730].  The command mappings described here are specifically
 for use in provisioning and managing Internet domain names via EPP.

3.1. EPP Query Commands

 EPP provides three commands to retrieve domain information: <check>
 to determine if a domain object can be provisioned within a
 repository, <info> to retrieve detailed information associated with a
 domain object, and <transfer> to retrieve domain object transfer
 status information.

3.1.1. EPP <check> Command

 The EPP <check> command is used to determine if an object can be
 provisioned within a repository.  It provides a hint that allows a
 client to anticipate the success or failure of provisioning an object
 using the <create> command as object provisioning requirements are
 ultimately a matter of server policy.
 In addition to the standard EPP command elements, the <check> command
 MUST contain a <domain:check> element that identifies the domain
 namespace and the location of the domain schema.  The <domain:check>
 element contains the following child elements:
  1. One or more <domain:name> elements that contain the fully

qualified names of the domain objects to be queried.

Hollenbeck Standards Track [Page 8] RFC 3731 EPP Domain Name Mapping March 2004

 Example <check> command:
 C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 C:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 C:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 C:     epp-1.0.xsd">
 C:  <command>
 C:    <check>
 C:      <domain:check
 C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 C:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 C:       domain-1.0.xsd">
 C:        <domain:name>example.com</domain:name>
 C:        <domain:name>example.net</domain:name>
 C:        <domain:name>example.org</domain:name>
 C:      </domain:check>
 C:    </check>
 C:    <clTRID>ABC-12345</clTRID>
 C:  </command>
 C:</epp>
 When a <check> command has been processed successfully, the EPP
 <resData> element MUST contain a child <domain:chkData> element that
 identifies the domain namespace and the location of the domain
 schema.  The <domain:chkData> element contains one or more
 <domain:cd> elements that contain the following child elements:
  1. A <domain:name> element that contains the fully qualified name of

the queried domain object. This element MUST contain an "avail"

    attribute whose value indicates object availability (can it be
    provisioned or not) at the moment the <check> command was
    completed.  A value of "1" or "true" means that the object can be
    provisioned.  A value of "0" or "false" means that the object can
    not be provisioned.
  1. An OPTIONAL <domain:reason> element that MAY be provided when an

object can not be provisioned. If present, this element contains

    server-specific text to help explain why the object can not be
    provisioned.  This text MUST be represented in the response
    language previously negotiated with the client; an OPTIONAL "lang"
    attribute MAY be present to identify the language if the
    negotiated value is something other than the default value of "en"
    (English).

Hollenbeck Standards Track [Page 9] RFC 3731 EPP Domain Name Mapping March 2004

 Example <check> response:
 S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 S:     epp-1.0.xsd">
 S:  <response>
 S:    <result code="1000">
 S:      <msg>Command completed successfully</msg>
 S:    </result>
 S:    <resData>
 S:      <domain:chkData
 S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 S:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 S:       domain-1.0.xsd">
 S:        <domain:cd>
 S:          <domain:name avail="1">example.com</domain:name>
 S:        </domain:cd>
 S:        <domain:cd>
 S:          <domain:name avail="0">example.net</domain:name>
 S:          <domain:reason>In use</domain:reason>
 S:        </domain:cd>
 S:        <domain:cd>
 S:          <domain:name avail="1">example.org</domain:name>
 S:        </domain:cd>
 S:      </domain:chkData>
 S:    </resData>
 S:    <trID>
 S:      <clTRID>ABC-12345</clTRID>
 S:      <svTRID>54322-XYZ</svTRID>
 S:    </trID>
 S:  </response>
 S:</epp>
 An EPP error response MUST be returned if a <check> command can not
 be processed for any reason.

3.1.2. EPP <info> Command

 The EPP <info> command is used to retrieve information associated
 with a domain object.  The response to this command MAY vary
 depending on the identity of the querying client, use of
 authorization information, and server policy towards unauthorized
 clients.  If the querying client is the sponsoring client, all
 available information MUST be returned.  If the querying client is
 not the sponsoring client, but the client provides valid
 authorization information, all available information MUST be

Hollenbeck Standards Track [Page 10] RFC 3731 EPP Domain Name Mapping March 2004

 returned.  If the querying client is not the sponsoring client, and
 the client does not provide valid authorization information, server
 policy determines which OPTIONAL elements are returned.
 In addition to the standard EPP command elements, the <info> command
 MUST contain a <domain:info> element that identifies the domain
 namespace and the location of the domain schema.  The <domain:info>
 element contains the following child elements:
  1. A <domain:name> element that contains the fully qualified name of

the domain object to be queried. An OPTIONAL "hosts" attribute is

    available to control return of information describing hosts
    related to the domain object.  A value of "all" (the default,
    which MAY be absent) returns information describing both
    subordinate and delegated hosts.  A value of "del" returns
    information describing only delegated hosts.  A value of "sub"
    returns information describing only subordinate hosts.  A value of
    "none" returns no information describing delegated or subordinate
    hosts.
  1. An OPTIONAL <domain:authInfo> element that contains authorization

information associated with the domain object or authorization

    information associated with the domain object's registrant or
    associated contacts.  An OPTIONAL "roid" attribute MUST be used to
    identify the registrant or contact object if and only if the given
    authInfo is associated with a registrant or contact object, and
    not the domain object itself.  If this element is not provided or
    if the authorization information is invalid, server policy
    determines if the command is rejected or if response information
    will be returned to the client.

Hollenbeck Standards Track [Page 11] RFC 3731 EPP Domain Name Mapping March 2004

 Example <info> command without authorization information:
 C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 C:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 C:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 C:     epp-1.0.xsd">
 C:  <command>
 C:    <info>
 C:      <domain:info
 C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 C:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 C:       domain-1.0.xsd">
 C:        <domain:name hosts="all">example.com</domain:name>
 C:      </domain:info>
 C:    </info>
 C:    <clTRID>ABC-12345</clTRID>
 C:  </command>
 C:</epp>
 Example <info> command with authorization information:
 C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 C:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 C:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 C:     epp-1.0.xsd">
 C:  <command>
 C:    <info>
 C:      <domain:info
 C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 C:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 C:       domain-1.0.xsd">
 C:        <domain:name hosts="all">example.com</domain:name>
 C:        <domain:authInfo>
 C:          <domain:pw>2fooBAR</domain:pw>
 C:        </domain:authInfo>
 C:      </domain:info>
 C:    </info>
 C:    <clTRID>ABC-12345</clTRID>
 C:  </command>
 C:</epp>

Hollenbeck Standards Track [Page 12] RFC 3731 EPP Domain Name Mapping March 2004

 When an <info> command has been processed successfully, the EPP
 <resData> element MUST contain a child <domain:infData> element that
 identifies the domain namespace and the location of the domain
 schema.  Elements that are not OPTIONAL MUST be returned; OPTIONAL
 elements are returned based on client authorization and server
 policy.  The <domain:infData> element contains the following child
 elements:
  1. A <domain:name> element that contains the fully qualified name of

the domain object.

  1. A <domain:roid> element that contains the Repository Object

IDentifier assigned to the domain object when the object was

    created.
  1. Zero or more OPTIONAL <domain:status> elements that contain the

current status descriptors associated with the domain.

  1. If supported by the server, one OPTIONAL <domain:registrant>

element and one or more OPTIONAL <domain:contact> elements that

    contain identifiers for the human or organizational social
    information objects associated with the domain object.
  1. An OPTIONAL <domain:ns> element that contains the fully qualified

names of the delegated host objects or host attributes (name

    servers) associated with the domain object.  See section 1.1 for a
    description of the elements used to specify host objects or host
    attributes.
  1. Zero or more OPTIONAL <domain:host> elements that contain the

fully qualified names of the subordinate host objects that exist

    under this superordinate domain object.
  1. A <domain:clID> element that contains the identifier of the

sponsoring client.

  1. An OPTIONAL <domain:crID> element that contains the identifier of

the client that created the domain object.

  1. An OPTIONAL <domain:crDate> element that contains the date and

time of domain object creation.

  1. An OPTIONAL <domain:exDate> element that contains the date and

time identifying the end of the domain object's registration

    period.

Hollenbeck Standards Track [Page 13] RFC 3731 EPP Domain Name Mapping March 2004

  1. An OPTIONAL <domain:upID> element that contains the identifier of

the client that last updated the domain object. This element MUST

    NOT be present if the domain has never been modified.
  1. An OPTIONAL <domain:upDate> element that contains the date and

time of the most recent domain object modification. This element

    MUST NOT be present if the domain object has never been modified.
  1. An OPTIONAL <domain:trDate> elements that contains the date and

time of the most recent successful domain object transfer. This

    element MUST NOT be provided if the domain object has never been
    transferred.
  1. An OPTIONAL <domain:authInfo> element that contains authorization

information associated with the domain object. This element MUST

    only be returned if the querying client is the current sponsoring
    client, or if the client supplied valid authorization information
    with the command.
 Example <info> response for an authorized client:
 S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 S:     epp-1.0.xsd">
 S:  <response>
 S:    <result code="1000">
 S:      <msg>Command completed successfully</msg>
 S:    </result>
 S:    <resData>
 S:      <domain:infData
 S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 S:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 S:       domain-1.0.xsd">
 S:        <domain:name>example.com</domain:name>
 S:        <domain:roid>EXAMPLE1-REP</domain:roid>
 S:        <domain:status s="ok"/>
 S:        <domain:registrant>jd1234</domain:registrant>
 S:        <domain:contact type="admin">sh8013</domain:contact>
 S:        <domain:contact type="tech">sh8013</domain:contact>
 S:        <domain:ns>
 S:          <domain:hostObj>ns1.example.com</domain:hostObj>
 S:          <domain:hostObj>ns1.example.net</domain:hostObj>
 S:        </domain:ns>
 S:        <domain:host>ns1.example.com</domain:host>
 S:        <domain:host>ns2.example.com</domain:host>
 S:        <domain:clID>ClientX</domain:clID>

Hollenbeck Standards Track [Page 14] RFC 3731 EPP Domain Name Mapping March 2004

 S:        <domain:crID>ClientY</domain:crID>
 S:        <domain:crDate>1999-04-03T22:00:00.0Z</domain:crDate>
 S:        <domain:upID>ClientX</domain:upID>
 S:        <domain:upDate>1999-12-03T09:00:00.0Z</domain:upDate>
 S:        <domain:exDate>2005-04-03T22:00:00.0Z</domain:exDate>
 S:        <domain:trDate>2000-04-08T09:00:00.0Z</domain:trDate>
 S:        <domain:authInfo>
 S:          <domain:pw>2fooBAR</domain:pw>
 S:        </domain:authInfo>
 S:      </domain:infData>
 S:    </resData>
 S:    <trID>
 S:      <clTRID>ABC-12345</clTRID>
 S:      <svTRID>54322-XYZ</svTRID>
 S:    </trID>
 S:  </response>
 S:</epp>
 A server with a different information return policy MAY provide less
 information in a response.
 Example <info> response for an unauthorized client:
 S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 S:     epp-1.0.xsd">
 S:  <response>
 S:    <result code="1000">
 S:      <msg>Command completed successfully</msg>
 S:    </result>
 S:    <resData>
 S:      <domain:infData
 S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 S:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 S:       domain-1.0.xsd">
 S:        <domain:name>example.com</domain:name>
 S:        <domain:roid>EXAMPLE1-REP</domain:roid>
 S:        <domain:clID>ClientX</domain:clID>
 S:      </domain:infData>
 S:    </resData>
 S:    <trID>
 S:      <clTRID>ABC-12345</clTRID>
 S:      <svTRID>54322-XYZ</svTRID>
 S:    </trID>
 S:  </response>
 S:</epp>

Hollenbeck Standards Track [Page 15] RFC 3731 EPP Domain Name Mapping March 2004

 An EPP error response MUST be returned if an <info> command can not
 be processed for any reason.

3.1.3. EPP <transfer> Query Command

 The EPP <transfer> command provides a query operation that allows a
 client to determine real-time status of pending and completed
 transfer requests.  In addition to the standard EPP command elements,
 the <transfer> command MUST contain an "op" attribute with value
 "query", and a <domain:transfer> element that identifies the domain
 namespace and the location of the domain schema.  The
 <domain:transfer> element contains the following child elements:
  1. A <domain:name> element that contains the fully qualified name of

the domain object to be queried.

  1. An OPTIONAL <domain:authInfo> element that contains authorization

information associated with the domain object or authorization

    information associated with the domain object's registrant or
    associated contacts.  An OPTIONAL "roid" attribute MUST be used to
    identify the registrant or contact object if and only if the given
    authInfo is associated with a registrant or contact object, and
    not the domain object itself.  If this element is not provided or
    if the authorization information is invalid, server policy
    determines if the command is rejected or if response information
    will be returned to the client.
 Example <transfer> query command:
 C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 C:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 C:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 C:     epp-1.0.xsd">
 C:  <command>
 C:    <transfer op="query">
 C:      <domain:transfer
 C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 C:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 C:       domain-1.0.xsd">
 C:        <domain:name>example.com</domain:name>
 C:        <domain:authInfo>
 C:          <domain:pw roid="JD1234-REP">2fooBAR</domain:pw>
 C:        </domain:authInfo>
 C:      </domain:transfer>
 C:    </transfer>
 C:    <clTRID>ABC-12345</clTRID>
 C:  </command>

Hollenbeck Standards Track [Page 16] RFC 3731 EPP Domain Name Mapping March 2004

 C:</epp>
 When a <transfer> query command has been processed successfully, the
 EPP <resData> element MUST contain a child <domain:trnData> element
 that identifies the domain namespace and the location of the domain
 schema. The <domain:trnData> element contains the following child
 elements:
  1. A <domain:name> element that contains the fully qualified name of

the domain object.

  1. A <domain:trStatus> element that contains the state of the most

recent transfer request.

  1. A <domain:reID> element that contains the identifier of the client

that requested the object transfer.

  1. A <domain:reDate> element that contains the date and time that the

transfer was requested.

  1. A <domain:acID> element that contains the identifier of the client

that SHOULD act upon the transfer request.

  1. A <domain:acDate> element that contains the date and time of a

required or completed response. For a PENDING request, the value

    identifies the date and time by which a response is required
    before an automated response action will be taken by the server.
    For all other status types, the value identifies the date and time
    when the request was completed.
  1. An OPTIONAL <domain:exDate> element that contains the end of the

domain object's validity period if the <transfer> command caused

    or causes a change in the validity period.
 Example <transfer> query response:
 S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 S:     epp-1.0.xsd">
 S:  <response>
 S:    <result code="1000">
 S:      <msg>Command completed successfully</msg>
 S:    </result>
 S:    <resData>
 S:      <domain:trnData
 S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"

Hollenbeck Standards Track [Page 17] RFC 3731 EPP Domain Name Mapping March 2004

 S:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 S:       domain-1.0.xsd">
 S:        <domain:name>example.com</domain:name>
 S:        <domain:trStatus>pending</domain:trStatus>
 S:        <domain:reID>ClientX</domain:reID>
 S:        <domain:reDate>2000-06-06T22:00:00.0Z</domain:reDate>
 S:        <domain:acID>ClientY</domain:acID>
 S:        <domain:acDate>2000-06-11T22:00:00.0Z</domain:acDate>
 S:        <domain:exDate>2002-09-08T22:00:00.0Z</domain:exDate>
 S:      </domain:trnData>
 S:    </resData>
 S:    <trID>
 S:      <clTRID>ABC-12345</clTRID>
 S:      <svTRID>54322-XYZ</svTRID>
 S:    </trID>
 S:  </response>
 S:</epp>
 An EPP error response MUST be returned if a <transfer> query command
 can not be processed for any reason.

3.2. EPP Transform Commands

 EPP provides five commands to transform domain objects: <create> to
 create an instance of a domain object, <delete> to delete an instance
 of a domain object, <renew> to extend the validity period of a domain
 object, <transfer> to manage domain object sponsorship changes, and
 <update> to change information associated with a domain object.
 Transform commands are typically processed and completed in real
 time.  Server operators MAY receive and process transform commands,
 but defer completing the requested action if human or third-party
 review is required before the requested action can be completed.  In
 such situations the server MUST return a 1001 response code to the
 client to note that the command has been received and processed, but
 the requested action is pending.  The server MUST also manage the
 status of the object that is the subject of the command to reflect
 the initiation and completion of the requested action.  Once the
 action has been completed, all clients involved in the transaction
 MUST be notified using a service message that the action has been
 completed and that the status of the object has changed.

Hollenbeck Standards Track [Page 18] RFC 3731 EPP Domain Name Mapping March 2004

3.2.1. EPP <create> Command

 The EPP <create> command provides a transform operation that allows a
 client to create a domain object.  In addition to the standard EPP
 command elements, the <create> command MUST contain a <domain:create>
 element that identifies the domain namespace and the location of the
 domain schema.  The <domain:create> element contains the following
 child elements:
  1. A <domain:name> element that contains the fully qualified name of

the domain object to be created.

  1. An OPTIONAL <domain:period> element that contains the initial

registration period of the domain object. A server MAY define a

    default initial registration period if not specified by the
    client.
  1. An OPTIONAL <domain:ns> element that contains the fully qualified

names of the delegated host objects or host attributes (name

    servers) associated with the domain object to provide resolution
    services for the domain; see section 1.1 for a description of the
    elements used to specify host objects or host attributes.  A host
    object MUST be known to the server before the host object can be
    associated with a domain object.
  1. An OPTIONAL <domain:registrant> element that contains the

identifier for the human or organizational social information

    (contact) object to be associated with the domain object as the
    object registrant.  This object identifier MUST be known to the
    server before the contact object can be associated with the domain
    object.  The EPP mapping for contact objects is described in
    [RFC3733].
  1. Zero or more OPTIONAL <domain:contact> elements that contain the

identifiers for other contact objects to be associated with the

    domain object.  Contact object identifiers MUST be known to the
    server before the contact object can be associated with the domain
    object.
  1. A <domain:authInfo> element that contains authorization

information to be associated with the domain object. This mapping

    includes a password-based authentication mechanism, but the schema
    allows new mechanisms to be defined in new schemas.

Hollenbeck Standards Track [Page 19] RFC 3731 EPP Domain Name Mapping March 2004

 Example <create> command:
 C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 C:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 C:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 C:     epp-1.0.xsd">
 C:  <command>
 C:    <create>
 C:      <domain:create
 C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 C:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 C:       domain-1.0.xsd">
 C:        <domain:name>example.com</domain:name>
 C:        <domain:period unit="y">2</domain:period>
 C:        <domain:ns>
 C:          <domain:hostObj>ns1.example.com</domain:hostObj>
 C:          <domain:hostObj>ns1.example.net</domain:hostObj>
 C:        </domain:ns>
 C:        <domain:registrant>jd1234</domain:registrant>
 C:        <domain:contact type="admin">sh8013</domain:contact>
 C:        <domain:contact type="tech">sh8013</domain:contact>
 C:        <domain:authInfo>
 C:          <domain:pw>2fooBAR</domain:pw>
 C:        </domain:authInfo>
 C:      </domain:create>
 C:    </create>
 C:    <clTRID>ABC-12345</clTRID>
 C:  </command>
 C:</epp>
 When a <create> command has been processed successfully, the EPP
 <resData> element MUST contain a child <domain:creData> element that
 identifies the domain namespace and the location of the domain
 schema.  The <domain:creData> element contains the following child
 elements:
  1. A <domain:name> element that contains the fully qualified name of

the domain object.

  1. A <domain:crDate> element that contains the date and time of

domain object creation.

  1. An OPTIONAL <domain:exDate> element that contains the date and

time identifying the end of the domain object's registration

    period.

Hollenbeck Standards Track [Page 20] RFC 3731 EPP Domain Name Mapping March 2004

 Example <create> response:
 S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 S:     epp-1.0.xsd">
 S:  <response>
 S:    <result code="1000">
 S:      <msg>Command completed successfully</msg>
 S:    </result>
 S:    <resData>
 S:      <domain:creData
 S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 S:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 S:       domain-1.0.xsd">
 S:        <domain:name>example.com</domain:name>
 S:        <domain:crDate>1999-04-03T22:00:00.0Z</domain:crDate>
 S:        <domain:exDate>2001-04-03T22:00:00.0Z</domain:exDate>
 S:      </domain:creData>
 S:    </resData>
 S:    <trID>
 S:      <clTRID>ABC-12345</clTRID>
 S:      <svTRID>54321-XYZ</svTRID>
 S:    </trID>
 S:  </response>
 S:</epp>
 An EPP error response MUST be returned if a <create> command can not
 be processed for any reason.

3.2.2. EPP <delete> Command

 The EPP <delete> command provides a transform operation that allows a
 client to delete a domain object.  In addition to the standard EPP
 command elements, the <delete> command MUST contain a <domain:delete>
 element that identifies the domain namespace and the location of the
 domain schema.  The <domain:delete> element contains the following
 child elements:
  1. A <domain:name> element that contains the fully qualified name of

the domain object to be deleted.

 A domain object SHOULD NOT be deleted if subordinate host objects are
 associated with the domain object.  For example, if domain
 "example.com" exists, and host object "ns1.example.com" also exists,
 then domain "example.com" SHOULD NOT be deleted until host
 "ns1.example.com" has been either deleted or renamed to exist in a

Hollenbeck Standards Track [Page 21] RFC 3731 EPP Domain Name Mapping March 2004

 different superordinate domain.  A server SHOULD notify clients that
 object relationships exist by sending a 2305 error response code when
 a <delete> command is attempted and fails due to existing object
 relationships.  Delegated and subordinate host objects associated
 with a domain object can be determined using the <info> query command
 for the domain object.
 Example <delete> command:
 C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 C:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 C:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 C:     epp-1.0.xsd">
 C:  <command>
 C:    <delete>
 C:      <domain:delete
 C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 C:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 C:       domain-1.0.xsd">
 C:        <domain:name>example.com</domain:name>
 C:      </domain:delete>
 C:    </delete>
 C:    <clTRID>ABC-12345</clTRID>
 C:  </command>
 C:</epp>
 When a <delete> command has been processed successfully, a server
 MUST respond with an EPP response with no <resData> element.
 Example <delete> response:
 S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 S:     epp-1.0.xsd">
 S:  <response>
 S:    <result code="1000">
 S:      <msg>Command completed successfully</msg>
 S:    </result>
 S:    <trID>
 S:      <clTRID>ABC-12345</clTRID>
 S:      <svTRID>54321-XYZ</svTRID>
 S:    </trID>
 S:  </response>
 S:</epp>

Hollenbeck Standards Track [Page 22] RFC 3731 EPP Domain Name Mapping March 2004

 An EPP error response MUST be returned if a <delete> command can not
 be processed for any reason.

3.2.3. EPP <renew> Command

 The EPP <renew> command provides a transform operation that allows a
 client to extend the validity period of a domain object.  In addition
 to the standard EPP command elements, the <renew> command MUST
 contain a <domain:renew> element that identifies the domain namespace
 and the location of the domain schema.  The <domain:renew> element
 contains the following child elements:
  1. A <domain:name> element that contains the fully qualified name of

the domain object whose validity period is to be extended.

  1. A <domain:curExpDate> element that contains the date on which the

current validity period ends. This value ensures that repeated

    <renew> commands do not result in multiple unanticipated
    successful renewals.
  1. An OPTIONAL <domain:period> element that contains the number of

units to be added to the registration period of the domain object.

    The number of units available MAY be subject to limits imposed by
    the server.
 Example <renew> command:
 C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 C:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 C:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 C:     epp-1.0.xsd">
 C:  <command>
 C:    <renew>
 C:      <domain:renew
 C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 C:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 C:       domain-1.0.xsd">
 C:        <domain:name>example.com</domain:name>
 C:        <domain:curExpDate>2000-04-03</domain:curExpDate>
 C:        <domain:period unit="y">5</domain:period>
 C:      </domain:renew>
 C:    </renew>
 C:    <clTRID>ABC-12345</clTRID>
 C:  </command>
 C:</epp>

Hollenbeck Standards Track [Page 23] RFC 3731 EPP Domain Name Mapping March 2004

 When a <renew> command has been processed successfully, the EPP
 <resData> element MUST contain a child <domain:renData> element that
 identifies the domain namespace and the location of the domain
 schema.  The <domain:renData> element contains the following child
 elements:
  1. A <domain:name> element that contains the fully qualified name of

the domain object.

  1. An OPTIONAL <domain:exDate> element that contains the date and

time identifying the end of the domain object's registration

    period.
 Example <renew> response:
 S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 S:     epp-1.0.xsd">
 S:  <response>
 S:    <result code="1000">
 S:      <msg>Command completed successfully</msg>
 S:    </result>
 S:    <resData>
 S:      <domain:renData
 S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 S:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 S:       domain-1.0.xsd">
 S:        <domain:name>example.com</domain:name>
 S:        <domain:exDate>2005-04-03T22:00:00.0Z</domain:exDate>
 S:      </domain:renData>
 S:    </resData>
 S:    <trID>
 S:      <clTRID>ABC-12345</clTRID>
 S:      <svTRID>54322-XYZ</svTRID>
 S:    </trID>
 S:  </response>
 S:</epp>
 An EPP error response MUST be returned if a <renew> command can not
 be processed for any reason.

3.2.4. EPP <transfer> Command

 The EPP <transfer> command provides a transform operation that allows
 a client to manage requests to transfer the sponsorship of a domain
 object.  In addition to the standard EPP command elements, the

Hollenbeck Standards Track [Page 24] RFC 3731 EPP Domain Name Mapping March 2004

 <transfer> command MUST contain a <domain:transfer> element that
 identifies the domain namespace and the location of the domain
 schema.  The <domain:transfer> element contains the following child
 elements:
  1. A <domain:name> element that contains the fully qualified name of

the domain object for which a transfer request is to be created,

    approved, rejected, or cancelled.
  1. An OPTIONAL <domain:period> element that contains the number of

units to be added to the registration period of the domain object

    at completion of the transfer process.  This element can only be
    used when a transfer is requested, and it MUST be ignored if used
    otherwise.  The number of units available MAY be subject to limits
    imposed by the server.
  1. A <domain:authInfo> element that contains authorization

information associated with the domain object or authorization

    information associated with the domain object's registrant or
    associated contacts.  An OPTIONAL "roid" attribute MUST be used to
    identify the registrant or contact object if and only if the given
    authInfo is associated with a registrant or contact object, and
    not the domain object itself.
 Every EPP <transfer> command MUST contain an "op" attribute that
 identifies the transfer operation to be performed.  Valid values,
 definitions, and authorizations for all attribute values are defined
 in [RFC3730].
 Transfer of a domain object MUST implicitly transfer all host objects
 that are subordinate to the domain object.  For example, if domain
 object "example.com" is transferred and host object "ns1.example.com"
 exists, the host object MUST be transferred as part of the
 "example.com" transfer process.  Host objects that are subject to
 transfer when transferring a domain object are listed in the response
 to an EPP <info> command performed on the domain object.
 Example <transfer> request command:
 C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 C:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 C:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 C:     epp-1.0.xsd">
 C:  <command>
 C:    <transfer op="request">
 C:      <domain:transfer
 C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"

Hollenbeck Standards Track [Page 25] RFC 3731 EPP Domain Name Mapping March 2004

 C:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 C:       domain-1.0.xsd">
 C:        <domain:name>example.com</domain:name>
 C:        <domain:period unit="y">1</domain:period>
 C:        <domain:authInfo>
 C:          <domain:pw roid="JD1234-REP">2fooBAR</domain:pw>
 C:        </domain:authInfo>
 C:      </domain:transfer>
 C:    </transfer>
 C:    <clTRID>ABC-12345</clTRID>
 C:  </command>
 C:</epp>
 When a <transfer> command has been processed successfully, the EPP
 <resData> element MUST contain a child <domain:trnData> element that
 identifies the domain namespace and the location of the domain
 schema.  The <domain:trnData> element contains the same child
 elements defined for a transfer query response.
 Example <transfer> response:
 S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 S:     epp-1.0.xsd">
 S:  <response>
 S:    <result code="1001">
 S:      <msg>Command completed successfully; action pending</msg>
 S:    </result>
 S:    <resData>
 S:      <domain:trnData
 S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 S:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 S:       domain-1.0.xsd">
 S:        <domain:name>example.com</domain:name>
 S:        <domain:trStatus>pending</domain:trStatus>
 S:        <domain:reID>ClientX</domain:reID>
 S:        <domain:reDate>2000-06-08T22:00:00.0Z</domain:reDate>
 S:        <domain:acID>ClientY</domain:acID>
 S:        <domain:acDate>2000-06-13T22:00:00.0Z</domain:acDate>
 S:        <domain:exDate>2002-09-08T22:00:00.0Z</domain:exDate>
 S:      </domain:trnData>
 S:    </resData>
 S:    <trID>
 S:      <clTRID>ABC-12345</clTRID>
 S:      <svTRID>54322-XYZ</svTRID>
 S:    </trID>

Hollenbeck Standards Track [Page 26] RFC 3731 EPP Domain Name Mapping March 2004

 S:  </response>
 S:</epp>
 An EPP error response MUST be returned if a <transfer> command can
 not be processed for any reason.

3.2.5. EPP <update> Command

 The EPP <update> command provides a transform operation that allows a
 client to modify the attributes of a domain object.  In addition to
 the standard EPP command elements, the <update> command MUST contain
 a <domain:update> element that identifies the domain namespace and
 the location of the domain schema.  The <domain:update> element
 contains the following child elements:
  1. A <domain:name> element that contains the fully qualified name of

the domain object to be updated.

  1. An OPTIONAL <domain:add> element that contains attribute values to

be added to the object.

  1. An OPTIONAL <domain:rem> element that contains attribute values to

be removed from the object.

  1. An OPTIONAL <domain:chg> element that contains object attribute

values to be changed.

 At least one <domain:add>, <domain:rem>, or <domain:chg> element MUST
 be provided.  The <domain:add> and <domain:rem> elements contain the
 following child elements:
  1. An OPTIONAL <domain:ns> element that contains the fully qualified

names of the delegated host objects or host attributes (name

    servers) associated with the domain object to provide resolution
    services for the domain; see section 1.1 for a description of the
    elements used to specify host objects or host attributes.  A host
    object MUST be known to the server before the host object can be
    associated with a domain object.  If host attributes are used to
    specify name servers, note that IP address elements are not needed
    to identify a name server that is being removed.  IP address
    elements can safely be absent or ignored in this situation.
  1. Zero or more <domain:contact> elements that contain the

identifiers for contact objects to be associated with or removed

    from the domain object.  Contact object identifiers MUST be known
    to the server before the contact object can be associated with the
    domain object.

Hollenbeck Standards Track [Page 27] RFC 3731 EPP Domain Name Mapping March 2004

  1. Zero or more <domain:status> elements that contain status values

to be applied to or removed from the object. When specifying a

    value to be removed, only the attribute value is significant;
    element text is not required to match a value for removal.
 A <domain:chg> element contains the following child elements:
  1. A <domain:registrant> element that contains the identifier for the

human or organizational social information (contact) object to be

    associated with the domain object as the object registrant.  This
    object identifier MUST be known to the server before the contact
    object can be associated with the domain object.  An empty element
    can be used to remove registrant information.
  1. A <domain:authInfo> element that contains authorization

information associated with the domain object. This mapping

    includes a password-based authentication mechanism, but the schema
    allows new mechanisms to be defined in new schemas.  A
    <domain:null> element can be used within the <domain:authInfo>
    element to remove authorization information.
 Example <update> command:
 C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 C:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 C:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 C:     epp-1.0.xsd">
 C:  <command>
 C:    <update>
 C:      <domain:update
 C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 C:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 C:       domain-1.0.xsd">
 C:        <domain:name>example.com</domain:name>
 C:        <domain:add>
 C:          <domain:ns>
 C:            <domain:hostObj>ns2.example.com</domain:hostObj>
 C:          </domain:ns>
 C:          <domain:contact type="tech">mak21</domain:contact>
 C:          <domain:status s="clientHold"
 C:           lang="en">Payment overdue.</domain:status>
 C:        </domain:add>
 C:        <domain:rem>
 C:          <domain:ns>
 C:            <domain:hostObj>ns1.example.com</domain:hostObj>
 C:          </domain:ns>
 C:          <domain:contact type="tech">sh8013</domain:contact>

Hollenbeck Standards Track [Page 28] RFC 3731 EPP Domain Name Mapping March 2004

 C:          <domain:status s="clientUpdateProhibited"/>
 C:        </domain:rem>
 C:        <domain:chg>
 C:          <domain:registrant>sh8013</domain:registrant>
 C:          <domain:authInfo>
 C:            <domain:pw>2BARfoo</domain:pw>
 C:          </domain:authInfo>
 C:        </domain:chg>
 C:      </domain:update>
 C:    </update>
 C:    <clTRID>ABC-12345</clTRID>
 C:  </command>
 C:</epp>
 When an <update> command has been processed successfully, a server
 MUST respond with an EPP response with no <resData> element.
 Example <update> response:
 S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 S:     epp-1.0.xsd">
 S:  <response>
 S:    <result code="1000">
 S:      <msg>Command completed successfully</msg>
 S:    </result>
 S:    <trID>
 S:      <clTRID>ABC-12345</clTRID>
 S:      <svTRID>54321-XYZ</svTRID>
 S:    </trID>
 S:  </response>
 S:</epp>
 An EPP error response MUST be returned if an <update> command can not
 be processed for any reason.

3.2.6. Offline Review of Requested Actions

 Commands are processed by a server in the order they are received
 from a client.  Though an immediate response confirming receipt and
 processing of the command is produced by the server, a server
 operator MAY perform an offline review of requested transform
 commands before completing the requested action.  In such situations
 the response from the server MUST clearly note that the transform
 command has been received and processed, but the requested action is

Hollenbeck Standards Track [Page 29] RFC 3731 EPP Domain Name Mapping March 2004

 pending.  The status of the corresponding object MUST clearly reflect
 processing of the pending action.  The server MUST notify the client
 when offline processing of the action has been completed.
 Examples describing a <create> command that requires offline review
 are included here.  Note the result code and message returned in
 response to the <create> command.
 S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 S:     epp-1.0.xsd">
 S:  <response>
 S:    <result code="1001">
 S:      <msg>Command completed successfully; action pending</msg>
 S:    </result>
 S:    <resData>
 S:      <domain:creData
 S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 S:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 S:       domain-1.0.xsd">
 S:        <domain:name>example.com</domain:name>
 S:        <domain:crDate>1999-04-03T22:00:00.0Z</domain:crDate>
 S:        <domain:exDate>2001-04-03T22:00:00.0Z</domain:exDate>
 S:      </domain:creData>
 S:    </resData>
 S:    <trID>
 S:      <clTRID>ABC-12345</clTRID>
 S:      <svTRID>54321-XYZ</svTRID>
 S:    </trID>
 S:  </response>
 S:</epp>
 The status of the domain object after returning this response MUST
 include "pendingCreate".  The server operator reviews the request
 offline, and informs the client of the outcome of the review by
 queuing a service message for retrieval via the <poll> command.
 The service message MUST contain text in the <response>, <msgQ>,
 <msg> element that describes the notification.  In addition, the EPP
 <resData> element MUST contain a child <domain:panData> element that
 identifies the domain namespace and the location of the domain
 schema.  The <domain:panData> element contains the following child
 elements:

Hollenbeck Standards Track [Page 30] RFC 3731 EPP Domain Name Mapping March 2004

  1. A <domain:name> element that contains the fully qualified name of

the domain object. The <domain:name> element contains a REQUIRED

    "paResult" attribute.  A positive boolean value indicates that the
    request has been approved and completed.  A negative boolean value
    indicates that the request has been denied and the requested
    action has not been taken.
  1. A <domain:paTRID> element that contains the client transaction

identifier and server transaction identifier returned with the

    original response to process the command.  The client transaction
    identifier is OPTIONAL and will only be returned if the client
    provided an identifier with the original <create> command.
  1. A <domain:paDate> element that contains the date and time

describing when review of the requested action was completed.

 Example "review completed" service message:
 S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
 S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
 S:     epp-1.0.xsd">
 S:  <response>
 S:    <result code="1301">
 S:      <msg>Command completed successfully; ack to dequeue</msg>
 S:    </result>
 S:    <msgQ count="5" id="12345">
 S:      <qDate>1999-04-04T22:01:00.0Z</qDate>
 S:      <msg>Pending action completed successfully.</msg>
 S:    </msgQ>
 S:    <resData>
 S:      <domain:panData
 S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
 S:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
 S:       domain-1.0.xsd">
 S:        <domain:name paResult="1">example.com</domain:name>
 S:        <domain:paTRID>
 S:          <clTRID>ABC-12345</clTRID>
 S:          <svTRID>54321-XYZ</svTRID>
 S:        </domain:paTRID>
 S:        <domain:paDate>1999-04-04T22:00:00.0Z</domain:paDate>
 S:      </domain:panData>
 S:    </resData>
 S:    <trID>
 S:      <clTRID>BCD-23456</clTRID>
 S:      <svTRID>65432-WXY</svTRID>
 S:    </trID>

Hollenbeck Standards Track [Page 31] RFC 3731 EPP Domain Name Mapping March 2004

 S:  </response>
 S:</epp>

4. Formal Syntax

 An EPP object mapping is specified in XML Schema notation.  The
 formal syntax presented here is a complete schema representation of
 the object mapping suitable for automated validation of EPP XML
 instances.  The BEGIN and END tags are not part of the schema; they
 are used to note the beginning and ending of the schema for URI
 registration purposes.
   BEGIN
   <?xml version="1.0" encoding="UTF-8"?>
   <schema targetNamespace="urn:ietf:params:xml:ns:domain-1.0"
           xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
           xmlns:host="urn:ietf:params:xml:ns:host-1.0"
           xmlns:epp="urn:ietf:params:xml:ns:epp-1.0"
           xmlns:eppcom="urn:ietf:params:xml:ns:eppcom-1.0"
           xmlns="http://www.w3.org/2001/XMLSchema"
           elementFormDefault="qualified">
   <!--
   Import common element types.
   -->
     <import namespace="urn:ietf:params:xml:ns:eppcom-1.0"
             schemaLocation="eppcom-1.0.xsd"/>
     <import namespace="urn:ietf:params:xml:ns:epp-1.0"
             schemaLocation="epp-1.0.xsd"/>
     <import namespace="urn:ietf:params:xml:ns:host-1.0"
             schemaLocation="host-1.0.xsd"/>
     <annotation>
       <documentation>
         Extensible Provisioning Protocol v1.0
         domain provisioning schema.
       </documentation>
     </annotation>
   <!--
   Child elements found in EPP commands.
   -->
     <element name="check" type="domain:mNameType"/>
     <element name="create" type="domain:createType"/>
     <element name="delete" type="domain:sNameType"/>
     <element name="info" type="domain:infoType"/>
     <element name="renew" type="domain:renewType"/>

Hollenbeck Standards Track [Page 32] RFC 3731 EPP Domain Name Mapping March 2004

     <element name="transfer" type="domain:transferType"/>
     <element name="update" type="domain:updateType"/>
   <!--
   Child elements of the <create> command.
   -->
     <complexType name="createType">
       <sequence>
         <element name="name" type="eppcom:labelType"/>
         <element name="period" type="domain:periodType"
          minOccurs="0"/>
         <element name="ns" type="domain:nsType"
          minOccurs="0"/>
         <element name="registrant" type="eppcom:clIDType"
          minOccurs="0"/>
         <element name="contact" type="domain:contactType"
          minOccurs="0" maxOccurs="unbounded"/>
         <element name="authInfo" type="domain:authInfoType"/>
       </sequence>
     </complexType>
     <complexType name="periodType">
       <simpleContent>
         <extension base="domain:pLimitType">
           <attribute name="unit" type="domain:pUnitType"
            use="required"/>
         </extension>
       </simpleContent>
     </complexType>
     <simpleType name="pLimitType">
       <restriction base="unsignedShort">
         <minInclusive value="1"/>
         <maxInclusive value="99"/>
       </restriction>
     </simpleType>
     <simpleType name="pUnitType">
       <restriction base="token">
         <enumeration value="y"/>
         <enumeration value="m"/>
       </restriction>
     </simpleType>
     <complexType name="nsType">
       <choice>
         <element name="hostObj" type="eppcom:labelType"
          maxOccurs="unbounded"/>
         <element name="hostAttr" type="domain:hostAttrType"

Hollenbeck Standards Track [Page 33] RFC 3731 EPP Domain Name Mapping March 2004

          maxOccurs="unbounded"/>
       </choice>
     </complexType>
   <!--
   Name servers are either host objects or attributes.
   -->
     <complexType name="hostAttrType">
       <sequence>
         <element name="hostName" type="eppcom:labelType"/>
         <element name="hostAddr" type="host:addrType"
          minOccurs="0" maxOccurs="unbounded"/>
       </sequence>
     </complexType>
   <!--
   If attributes, addresses are optional and follow the
   structure defined in the host mapping.
   -->
     <complexType name="contactType">
       <simpleContent>
         <extension base="eppcom:clIDType">
           <attribute name="type" type="domain:contactAttrType"/>
         </extension>
       </simpleContent>
     </complexType>
     <simpleType name="contactAttrType">
       <restriction base="token">
         <enumeration value="admin"/>
         <enumeration value="billing"/>
         <enumeration value="tech"/>
       </restriction>
     </simpleType>
     <complexType name="authInfoType">
       <choice>
         <element name="pw" type="eppcom:pwAuthInfoType"/>
         <element name="ext" type="eppcom:extAuthInfoType"/>
       </choice>
     </complexType>
   <!--
   Child element of commands that require a single name.
   -->
     <complexType name="sNameType">
       <sequence>
         <element name="name" type="eppcom:labelType"/>

Hollenbeck Standards Track [Page 34] RFC 3731 EPP Domain Name Mapping March 2004

       </sequence>
     </complexType>
   <!--
   Child element of commands that accept multiple names.
   -->
     <complexType name="mNameType">
       <sequence>
         <element name="name" type="eppcom:labelType"
          maxOccurs="unbounded"/>
       </sequence>
     </complexType>
   <!--
   Child elements of the <info> command.
   -->
     <complexType name="infoType">
       <sequence>
         <element name="name" type="domain:infoNameType"/>
         <element name="authInfo" type="domain:authInfoType"
          minOccurs="0"/>
       </sequence>
     </complexType>
     <complexType name="infoNameType">
       <simpleContent>
         <extension base = "eppcom:labelType">
           <attribute name="hosts" type="domain:hostsType"
            default="all"/>
         </extension>
       </simpleContent>
     </complexType>
     <simpleType name="hostsType">
       <restriction base="token">
         <enumeration value="all"/>
         <enumeration value="del"/>
         <enumeration value="none"/>
         <enumeration value="sub"/>
       </restriction>
     </simpleType>
   <!--
   Child elements of the <renew> command.
   -->
     <complexType name="renewType">
       <sequence>
         <element name="name" type="eppcom:labelType"/>
         <element name="curExpDate" type="date"/>

Hollenbeck Standards Track [Page 35] RFC 3731 EPP Domain Name Mapping March 2004

         <element name="period" type="domain:periodType"
          minOccurs="0"/>
       </sequence>
     </complexType>
   <!--
   Child elements of the <transfer> command.
   -->
     <complexType name="transferType">
       <sequence>
         <element name="name" type="eppcom:labelType"/>
         <element name="period" type="domain:periodType"
          minOccurs="0"/>
         <element name="authInfo" type="domain:authInfoType"
          minOccurs="0"/>
       </sequence>
     </complexType>
   <!--
   Child elements of the <update> command.
   -->
     <complexType name="updateType">
       <sequence>
         <element name="name" type="eppcom:labelType"/>
         <element name="add" type="domain:addRemType"
          minOccurs="0"/>
         <element name="rem" type="domain:addRemType"
          minOccurs="0"/>
         <element name="chg" type="domain:chgType"
          minOccurs="0"/>
       </sequence>
     </complexType>
   <!--
   Data elements that can be added or removed.
   -->
     <complexType name="addRemType">
       <sequence>
         <element name="ns" type="domain:nsType"
          minOccurs="0"/>
         <element name="contact" type="domain:contactType"
          minOccurs="0" maxOccurs="unbounded"/>
         <element name="status" type="domain:statusType"
          minOccurs="0" maxOccurs="11"/>
       </sequence>
     </complexType>
   <!--

Hollenbeck Standards Track [Page 36] RFC 3731 EPP Domain Name Mapping March 2004

   Data elements that can be changed.
   -->
     <complexType name="chgType">
       <sequence>
         <element name="registrant" type="domain:clIDChgType"
          minOccurs="0"/>
         <element name="authInfo" type="domain:authInfoChgType"
          minOccurs="0"/>
       </sequence>
     </complexType>
   <!--
   Allow the registrant value to be nullified by changing the
   minLength restriction to "0".
   -->
     <simpleType name="clIDChgType">
       <restriction base="token">
         <minLength value="0"/>
         <maxLength value="16"/>
       </restriction>
     </simpleType>
   <!--
   Allow the authInfo value to be nullified by including an
   empty element within the choice.
   -->
     <complexType name="authInfoChgType">
       <choice>
         <element name="pw" type="eppcom:pwAuthInfoType"/>
         <element name="ext" type="eppcom:extAuthInfoType"/>
         <element name="null"/>
       </choice>
     </complexType>
   <!--
   Child response elements.
   -->
     <element name="chkData" type="domain:chkDataType"/>
     <element name="creData" type="domain:creDataType"/>
     <element name="infData" type="domain:infDataType"/>
     <element name="panData" type="domain:panDataType"/>
     <element name="renData" type="domain:renDataType"/>
     <element name="trnData" type="domain:trnDataType"/>
   <!--
   <check> response elements.
   -->
     <complexType name="chkDataType">

Hollenbeck Standards Track [Page 37] RFC 3731 EPP Domain Name Mapping March 2004

       <sequence>
         <element name="cd" type="domain:checkType"
          maxOccurs="unbounded"/>
       </sequence>
     </complexType>
     <complexType name="checkType">
       <sequence>
         <element name="name" type="domain:checkNameType"/>
         <element name="reason" type="eppcom:reasonType"
          minOccurs="0"/>
       </sequence>
     </complexType>
     <complexType name="checkNameType">
       <simpleContent>
         <extension base="eppcom:labelType">
           <attribute name="avail" type="boolean"
            use="required"/>
         </extension>
       </simpleContent>
     </complexType>
   <!--
   <create> response elements.
   -->
     <complexType name="creDataType">
       <sequence>
         <element name="name" type="eppcom:labelType"/>
         <element name="crDate" type="dateTime"/>
         <element name="exDate" type="dateTime"
          minOccurs="0"/>
       </sequence>
     </complexType>
   <!--
   <info> response elements.
   -->
     <complexType name="infDataType">
       <sequence>
         <element name="name" type="eppcom:labelType"/>
         <element name="roid" type="eppcom:roidType"/>
         <element name="status" type="domain:statusType"
          minOccurs="0" maxOccurs="11"/>
         <element name="registrant" type="eppcom:clIDType"
          minOccurs="0"/>
         <element name="contact" type="domain:contactType"
          minOccurs="0" maxOccurs="unbounded"/>

Hollenbeck Standards Track [Page 38] RFC 3731 EPP Domain Name Mapping March 2004

         <element name="ns" type="domain:nsType"
          minOccurs="0"/>
         <element name="host" type="eppcom:labelType"
          minOccurs="0" maxOccurs="unbounded"/>
         <element name="clID" type="eppcom:clIDType"/>
         <element name="crID" type="eppcom:clIDType"
          minOccurs="0"/>
         <element name="crDate" type="dateTime"
          minOccurs="0"/>
         <element name="upID" type="eppcom:clIDType"
          minOccurs="0"/>
         <element name="upDate" type="dateTime"
          minOccurs="0"/>
         <element name="exDate" type="dateTime"
          minOccurs="0"/>
         <element name="trDate" type="dateTime"
          minOccurs="0"/>
         <element name="authInfo" type="domain:authInfoType"
          minOccurs="0"/>
       </sequence>
     </complexType>
   <!--
   Status is a combination of attributes and an optional
   human-readable message that may be expressed in languages other
   than English.
   -->
     <complexType name="statusType">
       <simpleContent>
         <extension base="normalizedString">
           <attribute name="s" type="domain:statusValueType"
            use="required"/>
           <attribute name="lang" type="language"
            default="en"/>
         </extension>
       </simpleContent>
     </complexType>
     <simpleType name="statusValueType">
       <restriction base="token">
         <enumeration value="clientDeleteProhibited"/>
         <enumeration value="clientHold"/>
         <enumeration value="clientRenewProhibited"/>
         <enumeration value="clientTransferProhibited"/>
         <enumeration value="clientUpdateProhibited"/>
         <enumeration value="inactive"/>
         <enumeration value="ok"/>
         <enumeration value="pendingCreate"/>

Hollenbeck Standards Track [Page 39] RFC 3731 EPP Domain Name Mapping March 2004

         <enumeration value="pendingDelete"/>
         <enumeration value="pendingRenew"/>
         <enumeration value="pendingTransfer"/>
         <enumeration value="pendingUpdate"/>
         <enumeration value="serverDeleteProhibited"/>
         <enumeration value="serverHold"/>
         <enumeration value="serverRenewProhibited"/>
         <enumeration value="serverTransferProhibited"/>
         <enumeration value="serverUpdateProhibited"/>
       </restriction>
     </simpleType>
   <!--
   Pending action notification response elements.
   -->
     <complexType name="panDataType">
       <sequence>
         <element name="name" type="domain:paNameType"/>
         <element name="paTRID" type="epp:trIDType"/>
         <element name="paDate" type="dateTime"/>
       </sequence>
     </complexType>
     <complexType name="paNameType">
       <simpleContent>
         <extension base="eppcom:labelType">
           <attribute name="paResult" type="boolean"
            use="required"/>
         </extension>
       </simpleContent>
     </complexType>
   <!--
   <renew> response elements.
   -->
   <complexType name="renDataType">
     <sequence>
       <element name="name" type="eppcom:labelType"/>
       <element name="exDate" type="dateTime"
        minOccurs="0"/>
     </sequence>
   </complexType>
 <!--
 <transfer> response elements.
 -->
   <complexType name="trnDataType">
     <sequence>

Hollenbeck Standards Track [Page 40] RFC 3731 EPP Domain Name Mapping March 2004

       <element name="name" type="eppcom:labelType"/>
       <element name="trStatus" type="eppcom:trStatusType"/>
       <element name="reID" type="eppcom:clIDType"/>
       <element name="reDate" type="dateTime"/>
       <element name="acID" type="eppcom:clIDType"/>
       <element name="acDate" type="dateTime"/>
       <element name="exDate" type="dateTime"
        minOccurs="0"/>
     </sequence>
   </complexType>
 <!--
 End of schema.
 -->
 </schema>
 END

5. Internationalization Considerations

 EPP is represented in XML, which provides native support for encoding
 information using the Unicode character set and its more compact
 representations including UTF-8.  Conformant XML processors recognize
 both UTF-8 and UTF-16 [RFC2781].  Though XML includes provisions to
 identify and use other character encodings through use of an
 "encoding" attribute in an <?xml?> declaration, use of UTF-8 is
 RECOMMENDED in environments where parser encoding support
 incompatibility exists.
 All date-time values presented via EPP MUST be expressed in Universal
 Coordinated Time using the Gregorian calendar.  XML Schema allows use
 of time zone identifiers to indicate offsets from the zero meridian,
 but this option MUST NOT be used with EPP.  The extended date-time
 form using upper case "T" and "Z" characters defined in [RFC3339]
 MUST be used to represent date-time values as XML Schema does not
 support truncated date-time forms or lower case "T" and "Z"
 characters.
 This document requires domain and host name syntax as specified in
 [RFC952] as updated by [RFC1123].  At the time of this writing, RFC
 3490 [RFC3490] describes a standard to use certain ASCII name labels
 to represent non-ASCII name labels.  These conformance requirements
 might change as a result of progressing work in developing standards
 for internationalized domain names.

Hollenbeck Standards Track [Page 41] RFC 3731 EPP Domain Name Mapping March 2004

6. IANA Considerations

 This document uses URNs to describe XML namespaces and XML schemas
 conforming to a registry mechanism described in [RFC3688].  Two URI
 assignments have been registered by the IANA.
 Registration request for the domain namespace:
 URI: urn:ietf:params:xml:ns:domain-1.0
 Registrant Contact: See the "Author's Address" section of this
 document.
 XML: None.  Namespace URIs do not represent an XML specification.
 Registration request for the domain XML schema:
 URI: urn:ietf:params:xml:schema:domain-1.0
 Registrant Contact: See the "Author's Address" section of this
 document.
 XML: See the "Formal Syntax" section of this document.

7. Security Considerations

 Authorization information as described in section 2.6 is REQUIRED to
 create a domain object.  This information is used in some query and
 transfer operations as an additional means of determining client
 authorization to perform the command.  Failure to protect
 authorization information from inadvertent disclosure can result in
 unauthorized transfer operations and unauthorized information
 release.  Both client and server MUST ensure that authorization
 information is stored and exchanged with high-grade encryption
 mechanisms to provide privacy services.
 The object mapping described in this document does not provide any
 other security services or introduce any additional considerations
 beyond those described by [RFC3730] and protocol layers used by EPP.

8. Acknowledgements

 This document was originally written as an individual submission
 Internet-Draft.  The provreg working group later adopted it as a
 working group document and provided many invaluable comments and
 suggested improvements.  The author wishes to acknowledge the efforts
 of WG chairs Edward Lewis and Jaap Akkerhuis for their process and
 editorial contributions.

Hollenbeck Standards Track [Page 42] RFC 3731 EPP Domain Name Mapping March 2004

 Specific suggestions that have been incorporated into this document
 were provided by Joe Abley, Chris Bason, Eric Brunner-Williams,
 Jordyn Buchanan, Dave Crocker, Ayesha Damaraju, Anthony Eden, Sheer
 El-Showk, Klaus Malorny, Dan Manley, Michael Mealling, Patrick
 Mevzek, Asbjorn Steira, Bruce Tonkin, and Rick Wesson.

9. References

9.1. Normative References

 [RFC952]   Harrenstien, K., Stahl, M. and E. Feinler, "DOD Internet
            Host Table Specification", RFC 952, October 1985.
 [RFC1123]  Braden, R., Ed., "Requirements for Internet Hosts --
            Application and Support", STD 3, RFC 1123, October 1989.
 [RFC2119]  Bradner, S., "Key Words for Use in RFCs to Indicate
            Requirement Levels", BCP 14, RFC 2119, March 1997.
 [RFC3339]  Klyne, G. and C. Newman, "Date and Time on the Internet:
            Timestamps", RFC 3339, July 2002.
 [RFC3688] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688,
            January 2004.
 [RFC3730]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP)",
            RFC 3730, March 2004.
 [RFC3732]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP)
            Host Mapping", RFC 3732, March 2004.
 [RFC3733]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP)
            Contact Mapping", RFC 3733, March 2004.
 [XML]      Editor T. Bray et al.: "Extensible Markup Language (XML)
            1.0 (Second Edition)", W3C Recommendation 6 October 2000.
 [XMLS-1]   Editors H. Thompson et al.: "XML Schema Part 1:
            Structures", W3C Recommendation 2 May 2001.
 [XMLS-2]   Editors P. Biron, A. Malhotra: "XML Schema Part 2:
            Datatypes", W3C Recommendation 2 May 2001.

9.2. Informative References

 [RFC2781]  Hoffman, P. and F. Yergeau, "UTF-16, an encoding of ISO
            10646", RFC 2781, February 2000.

Hollenbeck Standards Track [Page 43] RFC 3731 EPP Domain Name Mapping March 2004

 [RFC3490]  Faltstrom, P., Hoffman, P. and A. Costello,
            "Internationalizing Domain Names in Applications (IDNA)",
            RFC 3490, March 2003.

10. Author's Address

 Scott Hollenbeck
 VeriSign Global Registry Services
 21345 Ridgetop Circle
 Dulles, VA 20166-6503
 USA
 EMail: shollenbeck@verisign.com

Hollenbeck Standards Track [Page 44] RFC 3731 EPP Domain Name Mapping March 2004

11. Full Copyright Statement

 Copyright (C) The Internet Society (2004).  This document is subject
 to the rights, licenses and restrictions contained in BCP 78 and
 except as set forth therein, the authors retain all their rights.
 This document and the information contained herein are provided on an
 "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
 OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
 ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
 INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
 INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
 WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Intellectual Property

 The IETF takes no position regarding the validity or scope of any
 Intellectual Property Rights or other rights that might be claimed to
 pertain to the implementation or use of the technology described in
 this document or the extent to which any license under such rights
 might or might not be available; nor does it represent that it has
 made any independent effort to identify any such rights.  Information
 on the procedures with respect to rights in RFC documents can be
 found in BCP 78 and BCP 79.
 Copies of IPR disclosures made to the IETF Secretariat and any
 assurances of licenses to be made available, or the result of an
 attempt made to obtain a general license or permission for the use of
 such proprietary rights by implementers or users of this
 specification can be obtained from the IETF on-line IPR repository at
 http://www.ietf.org/ipr.
 The IETF invites any interested party to bring to its attention any
 copyrights, patents or patent applications, or other proprietary
 rights that may cover technology that may be required to implement
 this standard.  Please address the information to the IETF at ietf-
 ipr@ietf.org.

Acknowledgement

 Funding for the RFC Editor function is currently provided by the
 Internet Society.

Hollenbeck Standards Track [Page 45]

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