How To Fix PPEBAL149 - Model mix &1 was locked

SAP Error Message - Details

• Message type: E = Error

• Message class: PPEBAL - Line Balance Message

• Message number: 149

• Message text: Model mix &1 was locked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message PPEBAL149 - Model mix &1 was locked ?

  The SAP error message PPEBAL149, which states "Model mix &1 was locked," typically occurs in the context of SAP's Production Planning and Detailed Scheduling (PP/DS) module. This error indicates that a specific model mix (in this case, identified by &1) is currently locked, preventing further processing or modifications.
  Cause:
  
  Concurrent Access: The model mix may be locked because another user or process is currently accessing it. This can happen during planning runs, simulations, or when another user is trying to make changes.
  System Processes: Background jobs or batch processes that are running may also lock the model mix to ensure data integrity during updates.
  Manual Locking: A user may have manually locked the model mix for maintenance or other purposes.
  
  Solution:
  
  Check Lock Status: Use transaction code SM12 to check for locks on the model mix. You can search for the specific lock entry related to the model mix in question.
  Identify the Locking User/Process: In SM12, you can identify which user or process is holding the lock. If it is a user, you may need to communicate with them to understand why the lock is in place.
  Release the Lock: If you determine that the lock is no longer needed (e.g., the user has finished their work), you can manually delete the lock entry in SM12. However, be cautious with this step, as it may lead to data inconsistencies if the locking process is still active.
  Wait for Completion: If the lock is due to a background job or process, you may need to wait for that process to complete before attempting to access the model mix again.
  Review Configuration: If this issue occurs frequently, it may be worth reviewing the configuration and processes around the model mix to ensure that locking is managed effectively.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view and manage locks), SM21 (to check system logs), and ST22 (to check for dumps).
  User Communication: If multiple users are working on the same model mix, establish a protocol for communication to avoid conflicts and unnecessary locking.
  Documentation: Refer to SAP documentation or support notes related to the PP/DS module for more detailed troubleshooting steps and best practices.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP Basis or technical support team for further assistance.