Restricting the SOAP Versions Handled by a Web Service
By default, an InterSystems IRIS® web service can handle SOAP requests that use SOAP version 1.1 or 1.2. To modify the web service so that it can handle only SOAP requests for a specific SOAP version, set the REQUESTVERSION parameter. This parameter can equal "1.1", "1.2", or "". If this parameter is "", the web service has the default behavior.
Note that the SOAPVERSION parameter does not affect the versions supported by the web service; it only controls which versions are advertised in the WSDL.