How To Fix /SAPAPO/SEQ807 - Line &1 is locked by a change mode in sequencing. User: &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SEQ -

• Message number: 807

• Message text: Line &1 is locked by a change mode in sequencing. User: &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/SEQ807 - Line &1 is locked by a change mode in sequencing. User: &2 ?

  The SAP error message /SAPAPO/SEQ807 indicates that a specific line in the sequencing process is locked due to a change mode. This typically occurs in the Advanced Planning and Optimization (APO) module of SAP when multiple users or processes attempt to modify the same data simultaneously.
  Cause:
  
  Concurrent Access: The line is being edited or processed by another user or transaction, which locks it to prevent data inconsistencies.
  Change Mode: The system is in a change mode that restricts access to certain data elements while they are being modified.
  Long-running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, causing other users to encounter this error.
  
  Solution:
  
  Wait and Retry: If the line is locked by another user, wait for them to complete their changes and then try again.
  Identify the Lock: Use transaction SM12 to check for locks. You can see which user is holding the lock and the object that is locked. If necessary, you can ask the user to release the lock.
  Check for Long-running Processes: If a process is taking too long, investigate it. You can use transaction SM66 to monitor active processes and identify any that may be causing locks.
  Lock Management: If you have the necessary authorizations, you can manually delete the lock entry in SM12, but this should be done with caution as it may lead to data inconsistencies.
  Review Change Modes: Ensure that the change modes are being used appropriately and that users are aware of the implications of their actions in the system.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM66: To monitor active processes in the system.
  
  
  User Communication: If you are in a collaborative environment, communicate with your team to avoid simultaneous changes to the same data.
  System Configuration: Review the configuration of the APO system to ensure that it is optimized for concurrent access and that locking mechanisms are functioning as intended.
  
  If the problem persists after trying the above solutions, it may be necessary to consult with your SAP Basis team or SAP support for further investigation.