How To Fix 1H107 - A stack with the key: BkAr &, type &, no. &, run no. & already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: 1H - BKK: Scheck-/Wechselverwaltung

• Message number: 107

• Message text: A stack with the key: BkAr &, type &, no. &, run no. & already exists

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 1H107 - A stack with the key: BkAr &, type &, no. &, run no. & already exists ?

  The SAP error message 1H107 indicates that there is an attempt to create a stack (or a data structure) that already exists in the system. This error typically occurs in the context of batch processing or when dealing with background jobs, particularly in the area of SAP's application server or job scheduling.
  Cause:
  The error message "A stack with the key: BkAr &, type &, no. &, run no. & already exists" suggests that:
  
  A stack with the specified key (which includes parameters like BkAr, type, number, and run number) is already present in the system.
  This could happen if there is a duplicate job or batch process trying to create a stack with the same identifier.
  It may also occur due to a programming error or misconfiguration in the job scheduling or batch processing logic.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Stacks: 
  
  Use transaction codes like SM37 (for job monitoring) or SM21 (for system logs) to check if there are existing jobs or processes that are using the same stack key.
  Identify if there are any jobs that are still running or have failed.
  
  
  
  Job Management:
  
  If you find that a job is still running, you may need to wait for it to complete or terminate it if it is stuck.
  If the job has failed, analyze the logs to understand why it failed and take corrective actions.
  
  
  
  Modify Job Scheduling:
  
  If the error is due to a scheduling conflict, consider modifying the job scheduling to avoid overlaps.
  Ensure that jobs are not scheduled to run simultaneously if they are using the same stack key.
  
  
  
  Check Custom Code:
  
  If this error is occurring in a custom program or report, review the code to ensure that it is not inadvertently trying to create a stack with the same key multiple times.
  Implement checks in the code to verify if a stack already exists before attempting to create a new one.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM37 for job monitoring, SM21 for system logs, and ST22 for dump analysis.
  Batch Processing: Understanding how batch processing works in SAP can help in diagnosing issues related to job scheduling and execution.
  SAP Documentation: Refer to SAP's official documentation for more details on error handling and job management.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.