Diagnosis
A check job has been scheduled by the report to send the IDocsbelonging to a serialization group. The check job contains the reportRBDSER03 as a job step. An error has occurred scheduling this checkjob.

Procedure
Please check that you can schedule the report RBDSER03 manually withoutany errors occuring. If errors do occur, first try to clear them.Errors could be caused by missing authorizations for scheduling andreleasing batch jobs or by internal system errors (lock problems, etc.)in the job administration.