Unable to refresh cache in SAP PI NW 7.3.1

Hi All,

I am unable to perform full & delta cache refresh.

CR content is not updated(it's below 9.5) -- Does this has anything to stop cache refresh?

I see SAP_XI_ID_SERV_USER role missing - does this has anything to do with cache refresh?

what authorizations are required to perform a successful(full & delta) cache refresh?

Attached is the error which is showing up.

Please help me

Thanks,

Raj