How To Fix /SAPAPO/OUTLDET091 - Error in event locking during event activation

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OUTLDET -

• Message number: 091

• Message text: Error in event locking during event activation

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OUTLDET091 - Error in event locking during event activation ?

  The SAP error message /SAPAPO/OUTLDET091 indicates that there is an issue with event locking during the activation of an event in the SAP Advanced Planning and Optimization (APO) module. This error typically arises when there is a conflict in the locking mechanism that prevents the event from being activated properly.
  Cause:
  
  Lock Conflicts: The most common cause of this error is that another process or user is holding a lock on the event that you are trying to activate. This can happen if multiple users or processes are trying to access the same event simultaneously.
  System Performance Issues: If the system is under heavy load, it may lead to delays in releasing locks, causing conflicts.
  Database Issues: Problems with the database or inconsistencies in the data can also lead to locking issues.
  Configuration Issues: Incorrect configuration settings in the APO system can lead to locking problems.
  
  Solution:
  
  Check Locks: Use transaction code SM12 to check for existing locks on the event. If you find locks that are no longer needed, you can delete them (ensure that you have the necessary authorizations to do so).
  Wait and Retry: If the lock is held by another user or process, you may need to wait for that process to complete and then try activating the event again.
  System Performance: Monitor the system performance and check for any bottlenecks. If the system is under heavy load, consider optimizing performance or scheduling the activation during off-peak hours.
  Database Consistency: Run database consistency checks to ensure that there are no underlying issues causing the locking problem.
  Review Configuration: Check the configuration settings in the APO system to ensure that they are set up correctly and are not contributing to the locking issue.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (to view and manage locks), SM21 (to check system logs), and ST22 (to analyze dumps) for troubleshooting.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including any relevant logs and the steps you have already taken to resolve the issue.
  Documentation: Review the official SAP documentation for APO to understand the event activation process and any specific requirements or configurations that may be relevant.
  
  By following these steps, you should be able to identify and resolve the issue causing the /SAPAPO/OUTLDET091 error.