SAP Message RSMPC066 - Request &1 was already retrieved from a DM that cannot be deleted

Diagnosis The request <(>&<)>V1& cannot be deleted from InfoCube <(>&<)>V2&,because a DataMart that cannot be deactivated automatically, hasalready retrieved this request. Deletion would create inconsistencies in the DataMart. Procedure Before you can delete the request, you need to deactivate the DataMartsthat have already retrieved this request.