As a follow up, my task is to find out changeman package related information and create a dump for users to verify. In other words, if a user has created a package in the last one year, the package should be present in teh dump. I know it can be done using SERXMLRC. I just dont know how. And I am not able to get any manual for reference.
If you dont have Serena Services manual, you can find the copybooks for SERXML services in your vendor SERCOMC.ASMCPY libraries. The copybook ending with PSCH(PACKAGE GENERAL SEARCH) will help you to achieve your requirement.