Consult table with SM30
Enter the table ZZR_REPO_SBU and 
The list of Groups of Activities (also called sub-GBU) links with the Business Unit (GBU) is displayed.
Consult table with SM30
Enter the table ZZR_REPO_SBU and
The list of Groups of Activities (also called sub-GBU) links with the Business Unit (GBU) is displayed.