GRDC needs APIs to populate data into ACDOCU which is part of S4 CORE Component that standard BW installation does not have. Eventually, GR standards for group reporting and such SaaS ETL is dedicated for group reporting usage.
For Group Reporting reports, there are certain calculation logic on the fly either through ABAP CDS view or ABAP Class which means the raw data in ACDOCU table does not reflect the results on group / interunit level.So you need to build query on top ...
