How To Fix >U120 - File has been changed: Restart not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: >U -

• Message number: 120

• Message text: File has been changed: Restart not possible

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 >U120 - File has been changed: Restart not possible ?

  The SAP error message "U120 File has been changed: Restart not possible" typically occurs when there is a discrepancy between the program or file that is currently being executed and the version that is stored in the SAP system. This can happen for several reasons, including:
  Causes:
  
  File Modification: The file or program has been modified after it was loaded into memory, which can happen if someone updates the program while it is still running.
  Transport Issues: If a transport request containing changes to the program has been imported while the program is running, it can lead to this error.
  System Updates: Changes made to the system (like patches or upgrades) can also lead to this error if they affect the program being executed.
  Development Environment Changes: If you are working in a development environment and changes are made to the code, it can lead to this error when trying to execute the program.
  
  Solutions:
  
  Restart the Program: The simplest solution is to restart the program or transaction that is causing the error. This will reload the latest version of the program.
  Check for Changes: Verify if any changes were made to the program or file. If so, ensure that the changes are properly transported and that the program is recompiled if necessary.
  Clear Buffer: In some cases, clearing the buffer can help. You can do this by using transaction code SICF to clear the buffer for the specific service or program.
  Check Transport Requests: If you suspect that a transport request has caused the issue, check the transport logs to see if any changes were made that could affect the program.
  Consult with Basis Team: If the issue persists, it may be necessary to consult with your SAP Basis team to investigate any underlying system issues or to check for any recent updates or changes that could have affected the program.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. SAP frequently updates their knowledge base with solutions and workarounds for common errors.
  System Logs: Review system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  Debugging: If you have access to debugging tools, you can try to debug the program to see where the error occurs and gather more information about the state of the program at the time of the error.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.