How To Fix KY255 - Error occurred when locking user group

SAP Error Message - Details

• Message type: E = Error

• Message class: KY - Messages for SAP-EIS: Presentation

• Message number: 255

• Message text: Error occurred when locking user group

What causes this issue?

You tried to lock user group &V1&, however, a system error occurred.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check whether lock object 'EKCUSERGRP' is active.
<DS:TRAN.SE12>Lock object</>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KY255 - Error occurred when locking user group ?

  The SAP error message KY255, which states "Error occurred when locking user group," typically occurs in the context of user group management within the SAP system. This error can arise due to various reasons, and understanding the cause is essential for finding an appropriate solution.
  Causes of KY255 Error
  
  
  User Group Locking Issues: The user group you are trying to lock may already be locked by another user or process, preventing your action from completing.
  
  
  Authorization Issues: The user attempting to lock the user group may not have the necessary authorizations to perform this action.
  
  
  Database Locking: There may be a database lock on the user group table, which can occur if another transaction is currently accessing or modifying the same data.
  
  
  System Configuration Issues: There could be configuration issues within the SAP system that are causing the locking mechanism to fail.
  
  
  Technical Errors: There may be underlying technical issues, such as problems with the SAP kernel or database inconsistencies.
  
  
  Solutions to KY255 Error
  
  
  Check for Existing Locks:
  
  Use transaction code SM12 to check for existing locks on the user group. If you find that the user group is locked by another user, you may need to wait for that user to release the lock or, if appropriate, you can delete the lock (ensure you have the necessary authorizations).
  
  
  
  Verify Authorizations:
  
  Ensure that the user has the necessary authorizations to lock user groups. You can check this using transaction code SU53 to analyze authorization failures.
  
  
  
  Review System Logs:
  
  Check the system logs (transaction code SM21) for any related error messages or warnings that might provide more context about the issue.
  
  
  
  Database Consistency Check:
  
  Perform a database consistency check to ensure that there are no underlying issues with the database that could be causing the locking error.
  
  
  
  Restart the Transaction:
  
  Sometimes, simply restarting the transaction or logging out and back into the SAP system can resolve temporary issues.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance. They may provide patches or additional troubleshooting steps.
  
  
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SU01 (User Maintenance), SU10 (Mass User Maintenance), SM12 (Display and Delete Locks), and SM21 (System Log).
  User Group Management: Understanding how user groups are managed in SAP can help in troubleshooting issues related to user group locking.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  By following these steps, you should be able to identify the cause of the KY255 error and implement a suitable solution.