How To Fix N2M251 - Active association no longer included: Not possible to lock

SAP Error Message - Details

• Message type: E = Error

• Message class: N2M - Global Trade: Item Category Management

• Message number: 251

• Message text: Active association no longer included: Not possible to lock

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message N2M251 - Active association no longer included: Not possible to lock ?

  The SAP error message N2M251, which states "Active association no longer included: Not possible to lock," typically occurs in the context of SAP's data management and locking mechanisms. This error can arise in various scenarios, particularly when dealing with data records that are being accessed or modified concurrently by multiple users or processes.
  
  Cause:
  
  
  Concurrency Issues: The error often indicates that the system is unable to lock a particular record because it is already locked by another user or process. This can happen in environments where multiple users are trying to access or modify the same data simultaneously.
  
  
  Session Timeout: If a session has timed out or if there is a disconnection, the active association may no longer be valid, leading to this error.
  
  
  Data Consistency: The system may have detected that the data state has changed since the last read, making it impossible to lock the record for further processing.
  
  
  
  Configuration Issues: There may