Hi Tom,
If so, then a unique AbstractName is needed in order to accurately resolve EPRs, especially considering the potential service migration.
I think that AbstractName is certainly one approach to solving this problem. Remember that ReferenceParameters are used to provide information to the RECEIVER(wsa:to) to disambiguate the resource for dispatch.
I am confused by this - according to the WS-Addressing working group ReferenceParameters are designed to support stateful interactions (similar to the use of cookies with HTTP) - not to identify resources. They CAN be used to identify resources but this is not best practice according to the working group. see http://www.w3.org/2002/ws/addr/wd-issues/#i001 and http://lists.w3.org/Archives/Public/public-ws-addressing/2004Dec/0051 thanks Mark