How To Fix CSL_TOKENMGMT023 - CSL: &1: User ref. lock is not compatible with existing lock (&2)

SAP Error Message - Details

• Message type: E = Error

• Message class: CSL_TOKENMGMT - CSL: Message Class for Token Management Messages

• Message number: 023

• Message text: CSL: &1: User ref. lock is not compatible with existing lock (&2)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CSL_TOKENMGMT023 - CSL: &1: User ref. lock is not compatible with existing lock (&2) ?

  The SAP error message CSL_TOKENMGMT023 indicates that there is a conflict with user reference locks in the context of the Centralized Lock Management (CSL) in SAP. This error typically arises when a user tries to access or modify a resource that is already locked by another user or process, and the lock types are incompatible.
  Cause:
  
  Lock Conflict: The error occurs when a user attempts to acquire a lock on a resource that is already locked by another user or process with a different lock type. For example, if one user has an exclusive lock on a resource, another user may not be able to obtain a shared lock on the same resource.
  Session Management: It can also happen if there are multiple sessions or transactions trying to access the same data simultaneously, leading to a conflict in lock management.
  Inconsistent Locking Mechanism: If the application or process does not handle locks properly, it can lead to situations where incompatible locks are attempted.
  
  Solution:
  
  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 lock entries and see if you can identify the conflicting session.
  Release the Lock: If the lock is no longer needed, you can manually delete the lock entry from SM12. However, be cautious when doing this, as it may disrupt the work of the user holding the lock.
  Wait and Retry: If the lock is held by another user who is actively working, it may be best to wait until they complete their transaction and release the lock.
  Review Locking Logic: If this error occurs frequently, review the application logic to ensure that locks are being managed correctly. Ensure that locks are released properly after their use.
  Consult Documentation: Check SAP Notes and documentation for any specific guidance related to the error message and the context in which it occurs.
  
  Related Information:
  
  Transaction Codes: 
  
  SM12: Display and manage lock entries.
  SM21: Check system logs for any related issues.
  SM37: Monitor background jobs that might be causing locks.
  
  
  SAP Notes: Search for relevant SAP Notes that might address specific issues related to lock management and this error message.
  Performance Considerations: Frequent lock conflicts can indicate performance issues or design flaws in the application. Consider optimizing the locking strategy or reviewing the transaction design.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.