How To Fix /SAPAPO/MA638 - Job &1 is already running (number &2), no new job scheduled

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MA -

• Message number: 638

• Message text: Job &1 is already running (number &2), no new job scheduled

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MA638 - Job &1 is already running (number &2), no new job scheduled ?

  The SAP error message /SAPAPO/MA638 Job &1 is already running (number &2), no new job scheduled typically occurs in the SAP Advanced Planning and Optimization (APO) module when a job that is supposed to run is already in progress. This can happen for various reasons, such as overlapping job schedules or a job that has not completed due to long processing times or errors.
  Cause:
  
  Job Overlap: The job you are trying to schedule is already running. SAP does not allow the same job to run concurrently to prevent data inconsistencies.
  Long Processing Time: The job may be taking longer than expected to complete, causing subsequent scheduled jobs to be blocked.
  Job Failure: If a previous instance of the job failed and is still in a running state, it may prevent new instances from being scheduled.
  System Configuration: The system may be configured to not allow concurrent execution of certain jobs.
  
  Solution:
  
  
  Check Job Status: Use transaction code SM37 to check the status of the job that is currently running. Look for the job name (indicated by &1) and job number (indicated by &2).
  
  If the job is still running, you may need to wait for it to complete.
  If the job has failed or is stuck, you may need to terminate it.
  
  
  
  Terminate the Job: If the job is stuck or has failed, you can terminate it from the SM37 transaction. Select the job and choose the option to cancel or delete it.
  
  
  Reschedule the Job: After ensuring that the previous job has completed or has been terminated, you can reschedule the job.
  
  
  Review Job Scheduling: If this issue occurs frequently, review the job scheduling to ensure that jobs are not overlapping. You may need to adjust the scheduling times to allow sufficient time for each job to complete.
  
  
  Check for System Configuration: If necessary, consult with your SAP Basis team to review the system configuration regarding job scheduling and concurrency settings.
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM37: Job Monitoring
  SM36: Job Scheduling
  SM21: System Log (to check for any related errors)
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to job scheduling in APO.
  
  
  Documentation: Review SAP documentation on job management and scheduling in APO for best practices and guidelines.
  
  
  By following these steps, you should be able to resolve the error and ensure that your jobs are scheduled and executed properly.