How To Fix TL520 - Run is locked by another run

SAP Error Message - Details

• Message type: E = Error

• Message class: TL - Messages for language transports

• Message number: 520

• Message text: Run is locked by another run

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message TL520 - Run is locked by another run ?

  The SAP error message TL520, which states "Run is locked by another run," typically occurs when a background job or process is trying to access a resource that is currently being used by another job. This can happen in various scenarios, such as when multiple jobs are scheduled to run at the same time or when a job is still processing and another job attempts to start.
  Causes:
  
  Concurrent Jobs: Two or more background jobs are trying to access the same resource or run the same program simultaneously.
  Job Locking: A job that is currently running has not yet released its lock on the resource, preventing other jobs from accessing it.
  Long-Running Jobs: A job that takes longer than expected to complete can cause subsequent jobs to be locked out.
  Configuration Issues: Incorrect configuration in job scheduling or resource allocation can lead to locking issues.
  
  Solutions:
  
  Check Job Status: Use transaction code SM37 to check the status of the jobs. Look for any jobs that are currently running and may be causing the lock.
  Wait for Completion: If a job is currently running, you may need to wait for it to complete before starting the new job.
  Terminate the Job: If a job is stuck or taking too long, you can terminate it using SM37. Be cautious with this approach, as it may lead to data inconsistencies.
  Adjust Scheduling: If you frequently encounter this issue, consider adjusting the scheduling of your jobs to avoid conflicts. Stagger the execution times of jobs that access the same resources.
  Review Job Dependencies: Ensure that jobs that depend on the completion of other jobs are scheduled correctly to avoid conflicts.
  Check for Locks: Use transaction code SM12 to check for any locks that may be held by other users or processes. You can release locks if they are no longer needed.
  
  Related Information:
  
  Transaction Codes:
  
  SM37: Monitor background jobs.
  SM12: Display and manage locks.
  SM21: Check system logs for any related errors or warnings.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to job scheduling and locking mechanisms.
  Documentation: Review SAP documentation for best practices on job scheduling and resource management.
  
  By following these steps, you should be able to resolve the TL520 error and prevent it from occurring in the future.