How To Fix /ACCGO/MCK_MAINT166 - BOM ID &1 is locked by user ID &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /ACCGO/MCK_MAINT -

• Message number: 166

• Message text: BOM ID &1 is locked by user ID &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ACCGO/MCK_MAINT166 - BOM ID &1 is locked by user ID &2 ?

  The SAP error message /ACCGO/MCK_MAINT166 BOM ID &1 is locked by user ID &2 indicates that a Bill of Materials (BOM) is currently locked by another user, preventing you from making changes or accessing it. This is a common issue in SAP systems when multiple users are trying to access or modify the same object simultaneously.
  Cause:
  
  Concurrent Access: Another user is currently editing or viewing the BOM, which locks it for other users.
  Session Timeout: A previous session may not have released the lock properly due to a timeout or unexpected termination.
  System Error: Occasionally, system errors or crashes can leave locks in place.
  
  Solution:
  
  Wait and Retry: If the lock is temporary, waiting for the other user to finish their work may resolve the issue. You can try again after some time.
  Identify the User: If you have the necessary permissions, you can check which user has locked the BOM. This can typically be done using transaction codes like SM12 (for lock entries) or SM21 (for system logs).
  Contact the User: If you identify the user who has the lock, you can reach out to them to see if they can release the lock.
  Release the Lock: If the user is unavailable and you have the necessary authorizations, you can manually release the lock using transaction SM12. Be cautious with this approach, as it may lead to data inconsistency if the other user is actively working on the BOM.
  Check for Background Jobs: Sometimes, background jobs may hold locks. Check if any jobs are running that might be causing the lock.
  System Administrator: If you are unable to resolve the issue, contact your SAP system administrator for assistance. They may have additional tools or permissions to investigate and resolve the lock.
  
  Related Information:
  
  Lock Management: Understanding how SAP handles locks can help in troubleshooting. Locks are typically managed at the database level to prevent data inconsistencies.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  SM12: Display and manage lock entries.
  SM21: View system logs for errors or issues.
  SE11: Check the database table structure if needed.
  
  
  User Training: Ensure that users are trained on proper session management to avoid leaving locks in place unintentionally.
  
  By following these steps, you should be able to address the issue related to the locked BOM in SAP.