How To Fix 15021 - Locks deleted manually

SAP Error Message - Details

• Message type: E = Error

• Message class: 15 - Update message

• Message number: 021

• Message text: Locks deleted manually

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 15021 - Locks deleted manually ?

  The SAP error message "15021 Locks deleted manually" typically indicates that a lock entry in the SAP system was removed manually, which can lead to inconsistencies or issues in the application that relies on that lock. This error is often related to the SAP lock management system, which is used to prevent concurrent access to data that could lead to data integrity issues.
  Cause:
  
  Manual Deletion: The most common cause of this error is that a user or an administrator has manually deleted a lock entry using transaction codes like SM12 (Lock Entries) or through a custom program.
  System Issues: Sometimes, system issues or crashes can lead to locks being deleted unexpectedly.
  Transport Issues: If there are issues during a transport process, it may lead to locks being deleted or not being created properly.
  
  Solution:
  
  Recreate the Lock: If the lock was deleted manually, you may need to rerun the transaction or process that originally created the lock to recreate it.
  Check Lock Entries: Use transaction code SM12 to check the current lock entries. You can identify if the lock is still needed or if it can be safely ignored.
  Review Logs: Check the system logs (transaction SLG1) for any related errors or warnings that might provide more context on why the lock was deleted.
  Consult Documentation: Review SAP documentation or notes related to the specific transaction or process you are working with to understand the implications of the lock being deleted.
  Contact SAP Support: If the issue persists or if you are unsure about the implications of the lock deletion, it may be necessary to contact SAP support for further assistance.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SLG1: To view application logs for troubleshooting.
  
  
  Lock Management: Understanding how SAP handles locks can help in troubleshooting. Locks are typically used to ensure that only one user or process can modify a piece of data at a time.
  Performance Considerations: Frequent manual deletion of locks can lead to performance issues and data integrity problems, so it is important to manage locks carefully.
  
  Best Practices:
  
  Avoid manual deletion of locks unless absolutely necessary.
  Regularly monitor lock entries to ensure that they are being managed properly.
  Educate users and administrators about the implications of manually deleting locks.
  
  By following these guidelines, you can address the "15021 Locks deleted manually" error and maintain the integrity of your SAP system.