How To Fix OQ_H105 - Segment type &1 could not be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: OQ_H - IS-Oil SSR : Message pool Interfaces/IAC/BAPI development

• Message number: 105

• Message text: Segment type &1 could not be locked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OQ_H105 - Segment type &1 could not be locked ?

  The SAP error message OQ_H105, which states "Segment type &1 could not be locked," typically occurs in the context of handling segment types in SAP, particularly in the areas of order management, production planning, or inventory management. This error indicates that the system is unable to lock a specific segment type for processing, which can prevent users from making changes or updates to that segment.
  Causes:
  
  Concurrent Access: Another user or process may be currently accessing or locking the segment type, preventing your transaction from obtaining the necessary lock.
  System Configuration: There may be configuration issues related to the segment type or the locking mechanism in SAP.
  Database Issues: Problems with the database or the underlying data structure can lead to locking issues.
  Transaction Errors: If a previous transaction did not complete successfully, it may have left locks in place that are preventing new transactions from proceeding.
  Authorization Issues: The user may not have the necessary authorizations to lock the segment type.
  
  Solutions:
  
  Check for Concurrent Users: Use transaction codes like SM12 (to view and manage locks) to see if another user is holding a lock on the segment type. If so, you may need to wait for that user to complete their transaction or coordinate with them.
  Retry the Transaction: Sometimes, simply retrying the transaction after a short wait can resolve the issue if it was a temporary lock.
  Review System Logs: Check the system logs (transaction SLG1) for any related error messages that might provide more context on the issue.
  Clear Locks: If you identify stale locks that are no longer needed, you can use SM12 to delete them, but be cautious and ensure that you are not disrupting other users.
  Check Authorizations: Ensure that the user has the necessary authorizations to perform the action related to the segment type.
  Consult with Basis Team: If the issue persists, it may be necessary to involve your SAP Basis team to investigate potential database or configuration issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (lock entries), SM21 (system log), and SLG1 (application log) for troubleshooting.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address known issues or provide patches related to this error.
  Documentation: Review SAP documentation related to the specific module you are working with (e.g., Production Planning, Materials Management) for more context on segment types and locking mechanisms.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.