Diagnosis
Not all the IDocs for serialization group &v1& have been successfullysent yet. For this reason the serialization group cannot be updated inthe receiving system without errors occurring. If the flag is not setto 'Always send control message', no control IDoc will be sent.

Procedure
Send the requests again manually. Select Tools -> ALE -> Administration-> Periodic processing -> Transactional RFC and execute the TransactionBD42 again.