How To Fix CMCL106 - Operation &1 has been locked by &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CMCL - Service layer for component allocations

• Message number: 106

• Message text: Operation &1 has been locked by &2

What causes this issue?

You want to edit operation &V1& which has, however, been locked by user
&V2&.

System Response

The component assignment cannot be created.

How to fix this error?

Try to perform the assignment again after user &V2& has unlocked
operation &V1&, or has left the Engineering Workbench.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CMCL106 - Operation &1 has been locked by &2 ?

  The SAP error message CMCL106 indicates that a specific operation (denoted by &1) has been locked by another user or process (denoted by &2). This typically occurs in scenarios where multiple users or processes are trying to access or modify the same data simultaneously, leading to a conflict.
  Cause:
  
  Concurrent Access: Another user or process is currently working on the same operation, which prevents others from making changes until the lock is released.
  Long-running Transactions: If a transaction takes too long to complete, it can hold locks longer than expected, causing other users to encounter this error.
  System Configuration: Certain configurations in the SAP system may lead to more frequent locking scenarios, especially in high-transaction environments.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for the user or process that holds the lock to complete their operation. After some time, you can retry the action that caused the error.
  Identify the Lock: Use transaction codes like SM12 (for lock entries) to identify which user or process is holding the lock. You can check the details and see if it is safe to contact the user or if the process can be terminated.
  Release the Lock: If you have the necessary authorizations, you can manually delete the lock entry in SM12. However, this should be done with caution, as it may lead to data inconsistencies if the other user is still working on the operation.
  Optimize Processes: Review and optimize the processes that are causing locks. This may involve improving transaction performance or changing how users interact with the system to reduce contention.
  User Training: Ensure that users are trained on how to properly complete transactions to minimize the time locks are held.
  
  Related Information:
  
  Transaction Codes: 
  
  SM12: Display and manage lock entries.
  SM21: Check system logs for any related issues.
  ST22: Analyze dumps that may provide insights into system performance.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to locking behavior in your specific version of SAP.
  Performance Monitoring: Regularly monitor system performance and locking behavior to identify patterns that may require adjustments in user processes or system configuration.
  
  If the issue persists or is affecting business operations significantly, it may be advisable to consult with your SAP Basis team or SAP support for further assistance.