How To Fix STC_TM090 - Background job &1/&2 is scheduled; no second execution allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: STC_TM - Task List Manager Messages

• Message number: 090

• Message text: Background job &1/&2 is scheduled; no second execution allowed

What causes this issue?

The execution of the task list run is scheduled.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

A different execution of the same task list run is not permitted.

How to fix this error?

Wait until the scheduled execution takes place to get a status update of
this task list run.

Procedure for System Administrators

Check job monitor (transaction <EX>SM37</>) for job name &V1& and job
count &V2& for details.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message STC_TM090 - Background job &1/&2 is scheduled; no second execution allowed ?

  The SAP error message STC_TM090 indicates that a background job is already scheduled for execution, and a second execution of the same job is not allowed. This is a common scenario in SAP when dealing with background processing, particularly with jobs that are scheduled to run at specific intervals or times.
  Cause:
  
  Job Already Scheduled: The primary cause of this error is that the background job you are trying to schedule is already in the queue or is currently running. SAP does not allow the same job to be executed multiple times simultaneously to prevent conflicts and resource contention.
  Job Variants: If you are trying to schedule a job with the same variant or parameters as an already scheduled job, this error may occur.
  Job Overlap: If a job is scheduled to run at a specific time and you attempt to schedule it again before the first instance has completed, you will encounter this error.
  
  Solution:
  
  Check Job Status: Use transaction code SM37 to check the status of the background job. Look for the job name and see if it is already scheduled or currently running.
  Wait for Completion: If the job is currently running, you may need to wait for it to complete before scheduling it again.
  Delete or Reschedule: If the job is stuck or you need to run it again immediately, you can delete the existing job (if appropriate) and then reschedule it. Be cautious with this approach to avoid data inconsistencies.
  Use Different Variants: If you need to run a similar job with different parameters, consider creating a new variant for the job to avoid conflicts.
  Adjust Scheduling: If the job is scheduled to run too frequently, consider adjusting the scheduling parameters to allow for sufficient time between executions.
  
  Related Information:
  
  Transaction Codes: 
  
  SM37: Monitor background jobs.
  SM36: Schedule background jobs.
  SM21: Check system logs for any related errors.
  
  
  Job Management: Familiarize yourself with job management best practices in SAP to avoid scheduling conflicts.
  Documentation: Refer to SAP Help documentation for more details on background job scheduling and management.
  
  By following these steps, you should be able to resolve the STC_TM090 error and manage your background jobs effectively.