Hi Jai,
thanks for your answer and the link. as far as I know, BPC writes down some information into some special tables (Tables with "UJ" as a prefix) to fulfill the customers requirements to regulate the access rights in more details then only using ABAP-Roles.
Please have a at this link:
Assign SAP BPC Authorizations via SAP GRC AC
I'll check both documents and may be I find a proper solution for this.
Kind regards,
Achim Heinekamp