How To Fix /UI2/CDMFCC121 - Merge Processing Failed: Target &1 JSON is missing &2 property &3.

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/CDMFCC -

• Message number: 121

• Message text: Merge Processing Failed: Target &1 JSON is missing &2 property &3.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI2/CDMFCC121 - Merge Processing Failed: Target &1 JSON is missing &2 property &3. ?

  The SAP error message /UI2/CDMFCC121 Merge Processing Failed: Target &1 JSON is missing &2 property &3 typically occurs in the context of SAP Fiori applications when there is an issue with the JSON data being processed. This error indicates that during a merge operation, the target JSON object is missing a required property.
  Cause:
  
  Missing Property: The target JSON object does not contain a property that is expected by the application or the merge operation.
  Data Structure Mismatch: There may be a mismatch between the expected data structure and the actual data being processed. This can happen if the backend service has changed or if there are inconsistencies in the data model.
  Configuration Issues: Incorrect configuration in the Fiori application or the underlying OData service can lead to this error.
  Versioning Issues: If there are different versions of the application or service being used, it may lead to discrepancies in the expected properties.
  
  Solution:
  
  Check the JSON Structure: Review the JSON structure being returned by the backend service. Ensure that it includes all the required properties as expected by the Fiori application.
  Update the Backend Service: If the backend service has changed, ensure that the Fiori application is updated to reflect these changes. This may involve updating the OData service or the data model.
  Debugging: Use debugging tools to trace the data flow and identify where the JSON is being constructed or modified. This can help pinpoint where the missing property is being lost.
  Configuration Review: Check the configuration settings in the Fiori application and the OData service to ensure they are correctly set up.
  Consult Documentation: Refer to the SAP documentation for the specific Fiori application or OData service to understand the expected data structure and properties.
  Error Handling: Implement error handling in the application to gracefully manage cases where properties may be missing, providing fallback values or user notifications.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  Fiori Elements: If you are using Fiori Elements, ensure that the annotations are correctly defined and that the metadata is up to date.
  OData Service: Use tools like the SAP Gateway Client to test the OData service and verify the response structure.
  Community Forums: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.