Custom tables are not displayed in datasource,GRC 10PC
when we are creating datasource in process controls the custom tables are not
displaying table information in lookup button ,but it is working for standard tables
we have selected sub scenario as configurable
provide inputs to see custom tables in object field of datasource
Not only for SAP tables even for custom tables also,RFC user should required access in target system check access of custom table to RFC user,if no access provide table access and then try for same.
check objects S_TABU_DIS or S_TABU_NAM access for user.
Hope this resolves your issue.