How To Fix /ISDFPS/LM_PM_ADDON169 - Flight &: Order cannot be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/LM_PM_ADDON -

• Message number: 169

• Message text: Flight &: Order cannot be locked

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ISDFPS/LM_PM_ADDON169 - Flight &: Order cannot be locked ?

  The SAP error message /ISDFPS/LM_PM_ADDON169 Flight &: Order cannot be locked typically indicates that there is an issue with locking mechanisms in the SAP system, particularly related to the order management or flight management modules. This error can occur when multiple users or processes are trying to access or modify the same order or flight data simultaneously, leading to a conflict.
  Causes:
  
  Concurrent Access: Multiple users or processes are trying to access or modify the same order at the same time.
  Lock Table Issues: The lock table may be full or not functioning correctly, preventing new locks from being created.
  Long-Running Transactions: A transaction that takes too long to complete may hold a lock longer than expected, causing other transactions to fail.
  System Configuration: There may be configuration issues in the SAP system that affect how locks are managed.
  
  Solutions:
  
  Wait and Retry: If the error is due to concurrent access, waiting for a few moments and then retrying the operation may resolve the issue.
  Check Lock Entries: Use transaction code SM12 to check for existing lock entries. If you find locks that are no longer needed, you can delete them (ensure you have the necessary authorizations).
  Review Long-Running Transactions: Identify any long-running transactions that may be holding locks and address them. This may involve optimizing the transaction or breaking it into smaller parts.
  System Monitoring: Monitor the system for performance issues that may be causing delays in transaction processing.
  Consult SAP Notes: Check the SAP Support Portal for any relevant notes or patches that may address this specific error.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for further assistance, especially if it appears to be a bug or a deeper system issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (for lock entries), SM21 (for system logs), and ST22 (for dumps) to diagnose issues.
  User Authorizations: Ensure that users have the appropriate authorizations to access and modify the orders in question.
  System Performance: Regularly monitor system performance and database locks to prevent similar issues in the future.
  
  By following these steps, you should be able to diagnose and resolve the error related to order locking in SAP.