XML Protocol Working Group Charter

The mission of the XML Protocol Working Group, part of the Web Services Activity, is to maintain and develop as needed the SOAP Version 1.2 specifications and their extensions.

Join the XML Protocol Working Group.

End date 31 December 2007
Confidentiality Proceedings are public
Initial Chairs Chris Ferris
Initial Team Contacts
(FTE %: 25)
Yves Lafon
Usual Meeting Schedule Teleconferences: Weekly
Face-to-face: No ftf meetings


The Working Group is responsible for updating errata documents and publishing new editions of the SOAP 1.2, XML-binary Optimized Packaging (XOP), and SOAP Message Transmission Optimization Mechanism (MTOM) W3C Recommendations, incorporating published errata.

In addition to the maintenance effort, the XML Protocol Working Group is chartered to work on SOAP Version 1.2 extensions. The Group will produce a Web Services Policy (WS Policy) assertion for MTOM, using the W3C Member submission MTOM Serialization Policy Assertion (WS-MTOMPolicy), and will continue the work the SOAP One way MEP, a Message Exchange Pattern describing one-way SOAP messaging.

Success Criteria

The XML Protocol Working Group is expected to demonstrate interoperable implementations during the Call for Implementations step.


The top priority deliverables of the Working Group are to produce any revisions necessary for the maintenance of these W3C Recommendations:

The Group also intends to produce the following documents:

The Group will also continue the maintenance of the following new documents:


Only new work is presented here, maintenance work will be done depending on issues received.

Note: The group will document significant changes from this initial schedule on the group home page.
Specification FPWD LC WGNOTE CR PR Rec
WS-MTOMPolicy June 2007 July 2007 September 2007 December 2007 January 2008
One-Way MEP (published) May 2007 June 2007

Timeline View Summary


W3C Groups

XML and XML derived activities have become a strategic technology in W3C and elsewhere. Each deliverable of any Working Group must satisfy the dependencies from other W3C Working Groups before it can advance to Candidate Recommendation.

Web Services Coordination Group
The XML Protocol Working Group will manage dependencies with other groups in the Web Services Activity through the Web Services Coordination Group.

External Groups

The XML Protocol Working Group should liaise with at least the following groups outside W3C:

The Internet Engineering Task Force
The XML Protocol WG will liaise with the IETF to discuss all transport protocol issues that are relevant for XML Protocol. For issues that are not clearly in the realm of an existing IETF WG, the IETF/W3C coordination call should be used as the discussion forum.
Organization for the Advancement of Structured Information Standards
OASIS is a not-for-profit, international consortium that drives the development, convergence and adoption of e-business standards.
Web Services Interoperability Organization
The Web Services Interoperability Organization is an open industry effort chartered to promote Web Services interoperability across platforms, applications, and programming languages through the development of profiles, any one of which could be relevant.


To be successful, the XML Protocol Working Group is expected to have 5 to 10 active participants for its duration. Effective participation to XML Protocol Working Group is expected to consume one day per week for each participant. The XML Protocol Working Group will allocate also the necessary resources for building Test Suites for each specification.

Participants are reminded of the Good Standing requirements of the W3C Process.


The Working Group will utilize a W3C Member mailing list <w3c-xml-protocol-wg@w3.org>, and a public mailing list <xml-dist-app@w3.org>. The public mailing list, with its wider audience, exists to promote openness and interoperability, and is the preferred channel of communication.

Information about the group (deliverables, participants, teleconferences, etc.) is available from the XML Protocol Working Group home page.

Decision Policy

As explained in the Process Document (section 3.3), this group will seek to make decisions when there is consensus. When the Chair puts a question and observes dissent, after due consideration of different opinions, the Chair should record a decision (possibly after a formal vote) and any objections, and move on.

This charter is written in accordance with Section 3.4, Votes of the W3C Process Document and includes no voting procedures beyond what the Process Document requires.

Patent Policy

This Working Group operates under the W3C Patent Policy (5 February 2004 Version). To promote the widest adoption of Web standards, W3C seeks to issue Recommendations that can be implemented, according to this policy, on a Royalty-Free basis.

For more information about disclosure obligations for this group, please see the W3C Patent Policy Implementation.

About this Charter

This draft charter for the XML Protocol Working Group has been created according to section 6.2 of the Process Document. In the event of a conflict between this document or the provisions of any charter and the W3C Process, the W3C Process shall take precedence.

Please also see the previous charter for this group.

Christopher Ferris <chrisfer@us.ibm.com>, Yves Lafon <ylafon@w3.org>

$Date: 2007/05/17 19:15:51 $