Hi Lavanya,
AFAIK WS-RM is not supported on AEX adapter: Advanced Adapter Engine Extended - SAP NetWeaver Process Integration - SAP Library
It is supported on the AEX, on 7.31 SP13 / 7.4 SP8 1997103 - FAQ: PI 7.31 / PI 7.4 Web Service Adapter for Advanced Adapter Engine (WS_AAE)
You should simulate this behavior without any standard way.
Regards.