How To Fix CM_EHFND_FEEDER_MSG007 - Optimistic locking is not allowed for a GUIBB: BO &1 and node &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_EHFND_FEEDER_MSG - Message Class for Generic Feeder Classes

• Message number: 007

• Message text: Optimistic locking is not allowed for a GUIBB: BO &1 and node &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CM_EHFND_FEEDER_MSG007 - Optimistic locking is not allowed for a GUIBB: BO &1 and node &2 ?

  The SAP error message CM_EHFND_FEEDER_MSG007 indicates that there is an issue with optimistic locking in a GUIBB (Graphical User Interface Building Block) for a specific Business Object (BO) and node. This error typically arises when there is an attempt to modify data in a way that conflicts with the optimistic locking mechanism, which is designed to prevent data inconsistencies when multiple users are trying to update the same data simultaneously.
  Cause:
  
  Optimistic Locking Mechanism: This mechanism allows multiple users to read data without locking it, but when a user tries to save changes, the system checks if the data has been modified by another user since it was read. If it has, the system raises an error to prevent overwriting changes made by others.
  Data Conflict: The error can occur if the data being modified has been changed by another user or process after it was read by the current user.
  Configuration Issues: There may be issues in the configuration of the GUIBB or the underlying data model that prevent optimistic locking from functioning correctly.
  
  Solution:
  
  Refresh Data: Before making changes, refresh the data in the GUIBB to ensure you are working with the most current version. This can often resolve conflicts.
  Check for Concurrent Updates: Ensure that no other users are updating the same data at the same time. If possible, coordinate with other users to avoid conflicts.
  Error Handling: Implement error handling in your application to catch this error and provide a user-friendly message, prompting the user to refresh the data and try again.
  Review Configuration: Check the configuration of the GUIBB and the associated Business Object to ensure that optimistic locking is properly set up. This may involve reviewing the data model and ensuring that the necessary fields for optimistic locking (like version numbers or timestamps) are included.
  Debugging: If the issue persists, consider debugging the application to trace the exact point of failure and understand the data flow. This may involve checking the backend logic and ensuring that the data is being handled correctly.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on handling optimistic locking in GUIBBs.
  Documentation: Review the SAP documentation related to GUIBBs and optimistic locking to understand the expected behavior and best practices.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to address the CM_EHFND_FEEDER_MSG007 error effectively.