Hello Sanath,
HPSM has to call either LDAP (VDS) or the REST interface to start a data processing in IdM. I would recommend you to use a custom entry type e.g. HPSM_REQUEST and after all operation has been performed in IdM you could call a web service in HPSM to provide feedback about the processing state back to HPSM.
Easiest way here would be using REST interface to start the operation and implement WS call in JavaScript in IdM for feedback (I know it is not looking so well to implement a WS call in JavaScript but it is simplest way). What I do not know is whether it is possible to extend HPSM in order to call REST service?
Regards
Norman