Hi,
the MM* data sources should only be used for local reporting in your embedded BW or for reporting via direct access.
In case you want to extract and load data from an SAP ERP system to BW, it is recommended to use the data sources 2LIS_03_BX, 2LIS_03_BF and 2LIS_03_UM instead.
The same applies for the other MM* application areas like Purchasing.
Best regards,
Andreas
