How To Fix LTR2_BASIS_SL050 - Scheduler for step list &1 is already running

SAP Error Message - Details

• Message type: E = Error

• Message class: LTR2_BASIS_SL - Step List Messages

• Message number: 050

• Message text: Scheduler for step list &1 is already running

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LTR2_BASIS_SL050 - Scheduler for step list &1 is already running ?

  The SAP error message LTR2_BASIS_SL050 indicates that a scheduler for a specific step list is already running. This typically occurs in the context of background processing or job scheduling within the SAP system, particularly when using the SAP Landscape Transformation (SLT) replication server.
  Cause:
  
  
  Concurrent Execution: The most common cause of this error is that a job or process that is trying to execute the same step list is already running. This can happen if:
  
  A previous job has not yet completed.
  A job was triggered multiple times inadvertently.
  There is a long-running process that is still active.
  
  
  
  System Configuration: Sometimes, the system configuration may allow for multiple instances of the same job to be scheduled, leading to conflicts.
  
  
  Job Overlap: If the job is scheduled to run at intervals that overlap, it may trigger this error.
  
  
  Solution:
  
  
  Check Running Jobs: 
  
  Use transaction code SM37 to check the status of background jobs. Look for jobs related to the step list in question and see if they are still running or if they have failed.
  If a job is still running, you may need to wait for it to complete.
  
  
  
  Job Management:
  
  If you find that a job is stuck or taking too long, you may need to terminate it. You can do this from the SM37 transaction by selecting the job and choosing the option to cancel it.
  Ensure that jobs are not scheduled to run too frequently or overlap with each other.
  
  
  
  Review Job Scheduling:
  
  Review the scheduling settings for the job to ensure that it is not set to run too frequently or at overlapping times.
  Consider implementing a locking mechanism or a check to prevent multiple instances of the same job from being scheduled.
  
  
  
  System Monitoring:
  
  Monitor the system performance and job execution times to identify any bottlenecks that may be causing jobs to run longer than expected.
  
  
  
  Consult Documentation: 
  
  Refer to SAP documentation or notes related to SLT and job scheduling for any specific recommendations or best practices.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM37: Monitor background jobs.
  SM36: Schedule background jobs.
  SLT Configuration: Check the SLT configuration settings for replication and job scheduling.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  Performance Tuning: If this issue occurs frequently, consider reviewing the performance of the underlying database and the SLT configuration to optimize job execution times.
  
  
  By following these steps, you should be able to resolve the error and prevent it from occurring in the future.