Hi Mangesh
is this happening on NWBC Screen to create a new access request? Which webdynpro link are you clicking? Is it the end user access request or the GRC user one (i.e. does the user have an SU01 account in GRC)
if it's for an access request, did you complete all the CUP/ARQ IMG configuration including your data sources.
These are the sorts of context and screen shots that would all us to help provide assistance. As well as that which release/SP you are on.
If working in DEV and no QA, then suggest you compare your configuration between the two systems to find the gap.
Regards
Colleen