How To Fix /CEERE/DM221 - Could not lock objects within TO &1. Calculation not saved

SAP Error Message - Details

• Message type: E = Error

• Message class: /CEERE/DM -

• Message number: 221

• Message text: Could not lock objects within TO &1. Calculation not saved

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /CEERE/DM221 - Could not lock objects within TO &1. Calculation not saved ?

  The SAP error message /CEERE/DM221 Could not lock objects within TO &1. Calculation not saved typically occurs in the context of the SAP Extended Warehouse Management (EWM) module, particularly when dealing with Transfer Orders (TOs) and the associated calculations or processes that require locking of certain objects.
  Cause:
  
  Concurrency Issues: This error often arises when multiple users or processes are trying to access or modify the same Transfer Order (TO) simultaneously. The system is unable to lock the necessary objects because they are already locked by another transaction.
  Long-running Transactions: If a transaction takes too long to complete, it may hold locks on objects longer than expected, leading to this error for other transactions trying to access the same objects.
  System Performance: High system load or performance issues can also lead to delays in acquiring locks, resulting in this error.
  
  Solution:
  
  Retry the Operation: Often, simply retrying the operation after a short wait can resolve the issue, especially if it was caused by a temporary lock.
  Check for Active Sessions: Use transaction codes like SM12 to check for active locks on the objects related to the Transfer Order. If you find any unnecessary locks, you may need to release them (with caution).
  Review Long-running Processes: Identify any long-running transactions that may be holding locks and optimize them if possible. This may involve reviewing the logic of the processes or breaking them into smaller, more manageable transactions.
  Increase Lock Timeout: If the issue is frequent, consider increasing the lock timeout settings in the system configuration, but this should be done with caution and in consultation with your SAP Basis team.
  System Performance Tuning: Work with your SAP Basis team to ensure that the system is performing optimally. This may involve checking for database performance issues, memory allocation, or other system resources.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (to view and manage locks), SM21 (to check system logs), and ST22 (to check for dumps) for troubleshooting.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Documentation: Review the SAP EWM documentation for best practices regarding Transfer Orders and locking mechanisms.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.