How To Fix KG055 - All selected segments were locked

SAP Error Message - Details

• Message type: E = Error

• Message class: KG - CO-PA Planning

• Message number: 055

• Message text: All selected segments were locked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message KG055 - All selected segments were locked ?

  The SAP error message KG055 ("All selected segments were locked") typically occurs in the context of controlling (CO) module transactions, particularly when dealing with cost center accounting or internal orders. This error indicates that the segments you are trying to access or modify are currently locked, preventing any changes or postings.
  Causes:
  
  Concurrent Users: Another user or process is currently accessing or modifying the same segments, leading to a lock.
  Background Jobs: A background job may be running that is locking the segments for processing.
  Transaction Locks: Certain transactions may place locks on segments to ensure data integrity during updates.
  System Configuration: Configuration settings in the system may lead to segments being locked under certain conditions.
  
  Solutions:
  
  Wait and Retry: If the lock is due to another user or process, waiting for a short period and then retrying the transaction may resolve the issue.
  Check Lock Entries: Use transaction code SM12 to check for lock entries. You can identify which user or process is holding the lock and take appropriate action.
  Contact the User: If you identify a specific user holding the lock, you may need to contact them to see if they can release the lock.
  Release Locks: If necessary and if you have the appropriate authorizations, you can manually delete the lock entries in SM12. However, this should be done with caution to avoid data inconsistencies.
  Review Background Jobs: Check if any background jobs are running that might be causing the locks. You can use transaction SM37 to monitor background jobs.
  System Configuration Review: If this issue occurs frequently, it may be worth reviewing the system configuration and settings related to locking mechanisms.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: Display and manage lock entries.
  SM37: Monitor background jobs.
  SE11: Data dictionary to check table structures if needed.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Review SAP documentation for the CO module to understand how locking works in the context of your specific transactions.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.