How To Fix /SAPAPO/ATP_BOP153 - Item &1/&2 has not been updated, as the purchase order was locked

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/ATP_BOP -

• Message number: 153

• Message text: Item &1/&2 has not been updated, as the purchase order was locked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/ATP_BOP153 - Item &1/&2 has not been updated, as the purchase order was locked ?

  The SAP error message /SAPAPO/ATP_BOP153 indicates that an item in a purchase order has not been updated because the purchase order is locked. This typically occurs in the context of Advanced Planning and Optimization (APO) when there are concurrent processes trying to access or modify the same purchase order.
  Cause:
  
  Locking Mechanism: SAP uses a locking mechanism to prevent data inconsistencies. If a purchase order is being edited or processed by another user or transaction, it will be locked, and other processes will be unable to update it.
  Long-running Transactions: If a transaction takes too long to complete, it can hold locks on the purchase order for an extended period, leading to this error for other users or processes trying to access it.
  Background Jobs: Sometimes, background jobs that are processing data can also lock the purchase order, preventing updates.
  
  Solution:
  
  Check Lock Entries: Use transaction code SM12 to check for lock entries related to the purchase order. You can identify which user or process is holding the lock.
  Wait and Retry: If the lock is temporary (e.g., due to a user editing the order), wait for the user to complete their transaction and then retry the operation.
  Release Locks: If you find that a lock is held unnecessarily (e.g., a user has left a session open), you may need to release the lock manually. However, this should be done with caution and typically requires appropriate authorizations.
  Optimize Processes: If this error occurs frequently, consider reviewing and optimizing the processes that interact with purchase orders to minimize locking issues. This may involve improving transaction performance or scheduling background jobs during off-peak hours.
  User Communication: If multiple users are working on the same purchase order, ensure that there is clear communication to avoid simultaneous edits.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related issues.
  ST22: To check for dumps that might provide additional context.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Review SAP documentation on locking mechanisms and best practices for managing concurrent access to data.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or technical team for further investigation.