SAP Message VHURL303 - Predecessor already has a successor transmission

Diagnosis The predecessor (&V1&) entered for the current transmissionalready has a successor. System Response Inbound processing terminated in mode In the background.However, further processing is possible in mode In the foreground . Procedure Check that the IDoc is correct. In the workflow inbox, enter a correct transmission number in the IDocfield TRMOLD (Segment: E1EDK40). This number must not yethave a successor transmission number in the table TRNSM withreference to the following parameters: - PartnerNo, PartType, PartRole : &V2& - Log.Message, MessVar, MessFct : &V3& - Direction, Test : &V4& Start inbound processing again (in the background). Alternatively, you can process the IDoc unchanged in mode in theforeground (online). If you do not want inbound processing to terminate as a result of theexternal transmission number consistency check, set automaticprocessing allowed in Customizing.