How To Fix CNACL_MSG_CL016 - Not all objects locked; see locked objects log

SAP Error Message - Details

• Message type: E = Error

• Message class: CNACL_MSG_CL - Message class for ACL FOR PS

• Message number: 016

• Message text: Not all objects locked; see locked objects log

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 CNACL_MSG_CL016 - Not all objects locked; see locked objects log ?

  The SAP error message CNACL_MSG_CL016 indicates that not all objects required for a particular operation (such as a change or a transaction) are locked. This can occur in various contexts, such as during the execution of a transaction that involves multiple objects, and it typically means that some of the objects are currently being accessed or modified by another user or process.
  Cause:
  
  Concurrent Access: Another user or process is currently accessing or modifying one or more of the objects that your transaction is trying to lock.
  Lock Table Overflow: The lock table may be full, preventing new locks from being acquired.
  Long-running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, causing other transactions to fail when trying to acquire locks on the same objects.
  Configuration Issues: There may be issues with the configuration of the locking mechanism in the SAP system.
  
  Solution:
  
  Check Locked Objects Log: Use transaction code SM12 to view the locked objects. This will help you identify which objects are locked and by whom. You can then decide whether to wait for the locks to be released or to contact the user holding the lock.
  Release Locks: If appropriate, you can manually release locks in SM12. However, be cautious when doing this, as it may disrupt other users' work.
  Retry the Operation: After checking the locks, you can retry the operation that caused the error.
  Optimize Transactions: If you frequently encounter this issue, consider optimizing the transactions to reduce the time locks are held. This may involve breaking down large transactions into smaller ones or improving performance.
  Monitor Lock Table: Regularly monitor the lock table to ensure it is not reaching its limits. You can check the lock table size and adjust it if necessary.
  Consult Basis Team: If the issue persists, consult your SAP Basis team for further investigation. They can check for system-wide issues or configuration problems.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: Display and manage locked entries.
  SM21: Check system logs for any related errors or warnings.
  SM37: Monitor background jobs that may be causing locks.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to locking mechanisms.
  Documentation: Review SAP documentation on locking mechanisms and best practices for managing locks in the system.
  
  By following these steps, you should be able to diagnose and resolve the CNACL_MSG_CL016 error effectively.