How To Fix CP126 - Reference operation set &1 is being edited by &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CP - Task list messages: Core data

• Message number: 126

• Message text: Reference operation set &1 is being edited by &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CP126 - Reference operation set &1 is being edited by &2 ?

  The SAP error message CP126 indicates that a reference operation set (ROS) is currently being edited by another user. This can occur in various scenarios, particularly when multiple users are trying to access or modify the same reference operation set simultaneously.
  Cause:
  
  Concurrent Access: The primary cause of this error is that another user has locked the reference operation set for editing. SAP locks certain objects to prevent data inconsistencies that can arise from concurrent modifications.
  Session Timeout: If a user has left a session open for an extended period, it may still hold a lock on the reference operation set.
  System Issues: Occasionally, system issues or bugs can lead to locks not being released properly.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for the other user to finish editing the reference operation set and then try again.
  Check Lock Entries: You can check the lock entries in the system using transaction code SM12. This will allow you to see which user is currently editing the reference operation set. If necessary, you can contact that user to coordinate access.
  Release Locks: If you have the necessary authorizations, you can manually release the lock using transaction SM12. However, this should be done with caution, as it may lead to data inconsistencies if the other user is still working on the object.
  Communicate with Users: If this is a recurring issue, it may be helpful to establish a protocol for editing shared objects to minimize conflicts.
  System Administration: If the problem persists, it may be necessary to involve your SAP Basis team to investigate any underlying system issues that could be causing locks to not be released properly.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related issues.
  SE11: To view the data dictionary and understand the structure of the reference operation set.
  
  
  Documentation: Refer to SAP Help documentation for more details on managing reference operation sets and understanding locking mechanisms in SAP.
  User Training: Providing training to users on how to properly manage and edit shared resources can help reduce the frequency of this error.
  
  By following these steps, you should be able to resolve the CP126 error and manage access to reference operation sets more effectively.