How To Fix /AIF/ENGINE_BDC018 - Session does not exist anymore and therefore cannot be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: /AIF/ENGINE_BDC -

• Message number: 018

• Message text: Session does not exist anymore and therefore 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /AIF/ENGINE_BDC018 - Session does not exist anymore and therefore cannot be locked ?

  The SAP error message /AIF/ENGINE_BDC018 Session does not exist anymore and therefore cannot be locked typically occurs in the context of the Application Interface Framework (AIF) when there is an attempt to access or lock a session that has already been closed or is no longer available. This can happen for various reasons, including session timeouts, improper session handling, or issues with the underlying application logic.
  Causes:
  
  Session Timeout: The session may have timed out due to inactivity, leading to its closure.
  Session Deletion: The session might have been deleted or terminated by another process or user.
  Concurrency Issues: Multiple processes trying to access the same session simultaneously can lead to conflicts.
  System Errors: There may be underlying system errors or inconsistencies in the AIF configuration or session management.
  
  Solutions:
  
  Check Session Status: Verify the status of the session in the AIF monitoring tools. Ensure that the session is still active and has not been closed or deleted.
  Increase Timeout Settings: If session timeouts are frequent, consider increasing the timeout settings in the AIF configuration to allow longer processing times.
  Review Application Logic: Check the application logic to ensure that sessions are being handled correctly and that there are no premature closures or deletions.
  Error Handling: Implement proper error handling in your AIF processes to manage session states and avoid conflicts.
  Restart the Process: If the session is no longer available, you may need to restart the process that was trying to access the session.
  Consult Logs: Review the application logs for any additional error messages or warnings that could provide more context about the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the AIF and session management.
  AIF Documentation: Refer to the official SAP documentation for AIF to understand session management and best practices.
  System Monitoring: Use transaction codes like SLG1 (Application Log) or AIFMON (AIF Monitoring) to monitor the AIF processes and sessions.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with SAP support for further assistance, providing them with detailed logs and context about the error.