The Web Service Implementation Classes and Provider Implementation Classes are dedicated to either the SOAP 1.1 specifications or the SOAP 1.2 specifications based on what you select during the development. Therefore, you can receive messages of either the SOAP 1.1 specifications or the SOAP 1.2 specifications. For receiving the messages corresponding to both the SOAP versions, you must define or implement multiple Web Service Implementation Classes or Provider Implementation Classes.

A stub-based Web Service client sends messages of either the SOAP 1.1 specifications or the SOAP 1.2 specifications. If either of the following conditions becomes applicable due to an error during the development, SOAP Messages with mismatched SOAP versions will be sent, and an error will occur at the Web Service machine:

• If you generate the stubs for the SOAP 1.1 specifications, when the Web Service binding corresponds to the SOAP 1.2 specifications
• If you generate the stubs for the SOAP 1.2 specifications, when the Web Service binding corresponds to the SOAP 1.1 specifications

With a dispatch-based and an API-based Web Service client, specify the SOAP version with the APIs. You can dynamically make changes regarding the SOAP version of messages to be sent based on the implementation method, such as by enabling changes to the specified value in the configuration file.