a0d929ca_WSRP_v2_0_Specification__Statement_text
[#] CS221 [Section] 14 [Statement text] 
Producers SHOULD NOT expect Consumers to use a mixture of WSRP v1 and v2 ports when interacting with it. Producers SHOULD use a single wsdl file with distinct service elements for their v1 and v2 support if they support artifacts, such as registrationHandle or portletState, being used with all operations regardless of the version of the standard defining that operation and SHOULD use separate wsdl files for specifying support for different versions of WSRP when artifacts are usable only within the operations defined by a specific version of the WSRP standard.
WSRP v2.0 Specification
Statement text