How To Fix MB_RESERVATION002 - Reservations are locked by another user.

SAP Error Message - Details

• Message type: E = Error

• Message class: MB_RESERVATION - Reservation

• Message number: 002

• Message text: Reservations are locked by another user.

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 MB_RESERVATION002 - Reservations are locked by another user. ?

  The SAP error message MB_RESERVATION002 indicates that a reservation is currently locked by another user. This typically occurs when multiple users are trying to access or modify the same reservation simultaneously, leading to a conflict.
  Cause:
  
  Concurrent Access: Another user is currently editing or has locked the reservation for processing.
  Session Timeout: A previous session may not have released the lock due to a timeout or an unexpected termination.
  System Configuration: Certain configurations in the SAP system may lead to locks being held longer than necessary.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for a few moments and then try to access the reservation again. The lock may be released once the other user completes their task.
  Identify the Locking User:
  
  Use transaction code SM12 to view the list of locks in the system. You can filter by the reservation number or user ID to identify who is holding the lock.
  If you have the necessary authorizations, you can also release the lock from this transaction. However, be cautious when doing this, as it may disrupt the other user's work.
  
  
  Communicate with Users: If you identify the user holding the lock, you can communicate with them to understand their needs and coordinate access to the reservation.
  Check for Background Jobs: Sometimes, background jobs may hold locks. Check if any background processes are running that might be affecting the reservation.
  System Configuration Review: If this issue occurs frequently, it may be worth reviewing the system configuration and lock management settings with your SAP Basis team.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage locks.
  MB21: To create reservations.
  MB22: To change reservations.
  MB23: To display reservations.
  
  
  User Roles and Authorizations: Ensure that users have the appropriate roles and authorizations to access and modify reservations.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on handling locks.
  
  If the problem persists or if you encounter frequent locking issues, it may be beneficial to consult with your SAP Basis team or SAP support for further investigation.