How To Fix SGT_01406 - No changes are allowed; segmentation structure is locked

SAP Error Message - Details

• Message type: E = Error

• Message class: SGT_01 - SGT_01

• Message number: 406

• Message text: No changes are allowed; segmentation structure is locked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SGT_01406 - No changes are allowed; segmentation structure is locked ?

  The SAP error message SGT_01406 indicates that a segmentation structure is locked, which means that no changes can be made to it at that moment. This typically occurs in the context of SAP's segmentation functionality, which is used for managing and analyzing customer data, among other things.
  Cause:
  
  
  Locking Mechanism: The segmentation structure is locked due to ongoing processes or transactions that are currently using it. This could be due to:
  
  Another user or process is editing the segmentation structure.
  A background job is running that is utilizing the segmentation structure.
  The structure is in a state that does not allow modifications (e.g., it is being activated or deactivated).
  
  
  
  Authorization Issues: The user may not have the necessary authorizations to make changes to the segmentation structure.
  
  
  Solution:
  
  
  Check for Locks:
  
  Use transaction code SM12 to check for any locks on the segmentation structure. If you find locks that are not being used, you may need to release them (ensure that you have the necessary authorizations to do so).
  
  
  
  Wait for Processes to Complete:
  
  If another user or a background job is using the segmentation structure, you may need to wait until that process is completed. You can check the status of background jobs using transaction code SM37.
  
  
  
  Review Authorizations:
  
  Ensure that you have the necessary authorizations to modify the segmentation structure. You may need to consult with your SAP security team to verify your permissions.
  
  
  
  Check for Active Sessions:
  
  If you suspect that a user is actively working on the segmentation structure, you can communicate with them to determine if they can release the lock.
  
  
  
  Restart the Transaction:
  
  Sometimes, simply restarting the transaction or logging out and back into the SAP system can resolve temporary issues.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: To view and manage locks.
  SM37: To monitor background jobs.
  SE11: To check the data dictionary for the segmentation structure.
  
  
  
  Documentation: Refer to SAP Help documentation for more details on segmentation structures and their management.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to segmentation structures and locking mechanisms.
  
  
  If the issue persists after trying the above solutions, it may be necessary to contact your SAP support team for further assistance.