Diagnosis
The background job for the old transaction SDCC is still active andcould not be deactivated.

Procedure
Go to transaction SM37 and search for jobs with the name'AUTO_SESSION_MANAGER' with status 'scheduled', 'released', 'ready', or'active', without specifying a time frame. Delete the correspondingjobs. If this doesn't work for a job, check it's status by selectingthe entry and then select menu 'Job' -> 'Check status'.