How To Fix TAX_EXEMPT021 - Error in enqueue! Tax exemption &1 can not be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: TAX_EXEMPT - Message class for tax exempt certificate

• Message number: 021

• Message text: Error in enqueue! Tax exemption &1 can not be locked

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message TAX_EXEMPT021 - Error in enqueue! Tax exemption &1 can not be locked ?

  The SAP error message TAX_EXEMPT021 indicates that there is an issue with locking a tax exemption record in the system. This error typically occurs when there is an attempt to access or modify a tax exemption record that is already locked by another user or process. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  Record Locking: The tax exemption record you are trying to access is currently locked by another user or transaction. This can happen if another user is editing the same record or if a previous transaction did not release the lock properly.
  System Issues: There may be underlying issues with the enqueue mechanism in SAP, which is responsible for managing locks on records.
  Long-running Transactions: If a transaction takes too long to complete, it may hold onto the lock longer than expected, causing other transactions to fail when trying to access the same record.
  
  Solutions
  
  Check for Active Sessions: Use transaction code SM12 to check for active locks. You can see which user or process is holding the lock on the tax exemption record. If it is safe to do so, you can delete the lock entry.
  Wait and Retry: If the lock is held by another user, you may need to wait until they finish their transaction and release the lock. You can try again after some time.
  Review Transaction Logs: Check transaction logs to identify if there are any long-running transactions that might be causing the lock. You can use transaction code SM21 to view system logs.
  System Restart: In some cases, if the enqueue mechanism is not functioning correctly, a system restart may be necessary. However, this should be done with caution and typically requires coordination with your SAP Basis team.
  Contact SAP Support: If the issue persists and you cannot identify the cause, it may be necessary to contact SAP support for further assistance.
  
  Related Information
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM21: To view system logs for troubleshooting.
  SM37: To check for long-running jobs that may be holding locks.
  
  
  Documentation: Refer to SAP Help documentation for more details on tax exemption handling and locking mechanisms.
  User Training: Ensure that users are trained on how to properly handle tax exemption records to minimize locking issues.
  
  By following these steps, you should be able to diagnose and resolve the TAX_EXEMPT021 error in your SAP system.