How To Fix C$255 - Data has changed, but no transfer to dialog

SAP Error Message - Details

• Message type: E = Error

• Message class: C$ -

• Message number: 255

• Message text: Data has changed, but no transfer to dialog

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 C$255 - Data has changed, but no transfer to dialog ?

  The SAP error message C$255, which states "Data has changed, but no transfer to dialog," typically occurs in the context of data entry or processing in SAP systems. This error indicates that the data in the user interface has changed since the last time it was processed, but the system is unable to transfer the updated data to the dialog or the next processing step.
  Causes:
  
  Data Changes: The data in the screen or dialog has been modified by another user or process, leading to a mismatch between the current data and the data that the system expects.
  Session Timeout: If the user session has timed out or if there has been a loss of connection, the system may not be able to transfer the data.
  Concurrency Issues: Multiple users trying to access or modify the same data simultaneously can lead to conflicts.
  Custom Code or Enhancements: Custom ABAP code or enhancements that manipulate data in the background may lead to inconsistencies.
  Buffer Issues: Problems with data buffering in the SAP system can also cause this error.
  
  Solutions:
  
  Refresh the Screen: Try refreshing the screen or re-entering the data. This can help synchronize the data with the database.
  Log Out and Log In: Logging out of the SAP session and logging back in can reset the session and clear any temporary issues.
  Check for Concurrent Users: If multiple users are accessing the same data, coordinate with them to avoid conflicts.
  Review Custom Code: If there are custom enhancements or ABAP code, review them for any issues that might be causing data inconsistencies.
  Contact SAP Support: If the issue persists, it may be necessary to contact SAP support for further assistance, especially if it is a recurring problem.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes, depending on the context in which the data is being processed.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  System Logs: Review system logs (SM21) and short dumps (ST22) for any additional information that may help diagnose the issue.
  User Training: Ensure that users are trained on proper data entry procedures to minimize the risk of data conflicts.
  
  By following these steps, you should be able to address the C$255 error and ensure smoother data processing in your SAP environment.