How To Fix CMCL102 - Item cannot be locked (lock management error)

SAP Error Message - Details

• Message type: E = Error

• Message class: CMCL - Service layer for component allocations

• Message number: 102

• Message text: Item cannot be locked (lock management error)

INCLUDE NA_OBJ_ANLSPERRV OBJECT DOKU ID TX

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CMCL102 - Item cannot be locked (lock management error) ?

  The SAP error message CMCL102, which states "Item cannot be locked (lock management error)," typically occurs when there is an issue with the locking mechanism in SAP. This error can arise in various scenarios, such as when multiple users are trying to access or modify the same data simultaneously, or when there are issues with the lock table in the SAP system.
  Causes:
  
  Concurrent Access: Multiple users or processes are trying to access or modify the same item simultaneously, leading to a lock conflict.
  Lock Table Overflow: The lock table may be full, preventing new locks from being created.
  System Performance Issues: High system load or performance issues can lead to delays in lock management.
  Database Issues: Problems with the underlying database can also affect lock management.
  User Authorization: The user may not have the necessary authorizations to lock the item.
  
  Solutions:
  
  Wait and Retry: If the error is due to concurrent access, waiting for a moment and then retrying the operation may resolve the issue.
  Check Lock Entries: Use transaction code SM12 to check for existing lock entries. You can identify if there are any locks held by other users that are preventing your action.
  Clear Locks: If you find unnecessary locks that are no longer needed, you can delete them (if you have the necessary authorizations) to free up the lock.
  Increase Lock Table Size: If the lock table is full, consider increasing its size. This can be done by adjusting the profile parameters in the SAP system.
  System Monitoring: Monitor system performance and check for any bottlenecks that may be affecting lock management.
  User Authorization Check: Ensure that the user has the necessary authorizations to perform the action that is causing the lock error.
  Consult Basis Team: If the issue persists, it may be necessary to consult the SAP Basis team for further investigation into system performance or database issues.
  
  Related Information:
  
  Transaction Codes: 
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related errors.
  ST22: To check for dumps that may provide more context on the error.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to lock management errors.
  Documentation: Review SAP documentation for lock management and troubleshooting steps.
  
  If the problem continues after trying the above solutions, it may be necessary to escalate the issue to SAP support for further assistance.