How To Fix /SCMB/SCU026 - Supply chain unit &1 is currently locked

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMB/SCU -

• Message number: 026

• Message text: Supply chain unit &1 is currently locked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCMB/SCU026 - Supply chain unit &1 is currently locked ?

  The SAP error message /SCMB/SCU026 Supply chain unit &1 is currently locked typically indicates that a specific supply chain unit (SCU) is currently being accessed or modified by another user or process, preventing your transaction from proceeding. This locking mechanism is a standard feature in SAP to ensure data integrity and prevent conflicts during concurrent access.
  Cause:
  
  Concurrent Access: Another user or process is currently working on the same supply chain unit.
  Long-running Transactions: A transaction that takes a long time to complete may hold the lock longer than expected.
  System Errors: Sometimes, system errors or crashes can leave locks in place unintentionally.
  Background Jobs: Background jobs that are processing data related to the SCU may also cause it to be locked.
  
  Solution:
  
  Wait and Retry: If the lock is temporary, waiting for a few moments and then retrying the operation may resolve the issue.
  Identify the Lock: Use transaction code SM12 to check for locks on the supply chain unit. You can filter by the user or the object type to find out who is holding the lock.
  Contact the User: If you identify the user holding the lock, you can contact them to see if they can release it.
  Release the Lock: If necessary and if you have the appropriate authorizations, you can manually delete the lock entry in SM12. Be cautious with this approach, as it may lead to data inconsistencies if the other user is still working on the SCU.
  Check Background Jobs: Use transaction SM37 to check if any background jobs are running that might be locking the SCU. If you find any, you may need to wait for them to complete or consult with your basis team.
  System Monitoring: If this issue occurs frequently, it may be worth investigating the system's performance and user activity to identify any underlying issues.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM37: To monitor background jobs.
  SM21: To check system logs for any related errors or warnings.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Review SAP documentation on locking mechanisms and supply chain unit management for further insights.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or support for further investigation.