SAP Message RSBK258 - DataSource &2 is currently assigned to real-time daemon &1

Diagnosis You are attempting to start a data transfer process (DTP) manually in aprocess chain. However, the DataSource that is the source of the DTP isalready assigned to a daemon for Real-Time Data Acquisition (daemonnumber. &v1&). System Response In this status, the DTP can only transfer data by Real-Time DataAcquisition. Procedure If you want to run the DTP in a process chain, delete the assignment ofDataSource &v2& to daemon &v1&.