Differences in SOAP versions

Both SOAP Version 1.1 and SOAP Version 1.2 are World Wide Web Consortium (W3C) standards. Web services can be deployed that support not only SOAP 1.1 but also support SOAP 1.2. Some changes from SOAP 1.1 that were made to the SOAP 1.2 specification are significant, while other changes are minor.

The SOAP 1.2 specification introduces several changes to SOAP 1.1. This information is not intended to be an in-depth description of all the new or changed features for SOAP 1.1 and SOAP 1.2. Instead, this information highlights some of the more important differences between the current versions of SOAP.

The changes to the SOAP 1.2 specification that are significant include the following updates:

SOAP 1.2 has a number of changes in syntax and provides additional, clarified semantics from those that are described in SOAP 1.1. The SOAP 1.2 Primer document lists and describes these syntax changes.




Related concepts
SOAP with Attachments API for Java interface
XML information set
SOAP
Related reference
Web services specifications and APIs
Related information
SOAP Version 1.2 Part 0: Primer W3C Recommendation 24 June 2003
WSDL 1.1 Binding Extension for SOAP 1.2
SOAP Version 1.2 Part 1: Messaging Framework W3C Recommendation 24 June 2003
SOAP with Attachments API for Java (SAAJ) 1.3 October 14 2004
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