How To Fix /UI2/CDMFCC122 - Merge Processing Failed: Target &1 JSON has wrong entity type &2.

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/CDMFCC -

• Message number: 122

• Message text: Merge Processing Failed: Target &1 JSON has wrong entity type &2.

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 /UI2/CDMFCC122 - Merge Processing Failed: Target &1 JSON has wrong entity type &2. ?

  The SAP error message /UI2/CDMFCC122 Merge Processing Failed: Target &1 JSON has wrong entity type &2 typically occurs in the context of SAP Fiori applications or when working with the SAP Gateway and OData services. This error indicates that there is a mismatch between the expected entity type and the actual entity type present in the JSON data being processed.
  Cause:
  
  
  Entity Type Mismatch: The error suggests that the JSON data being sent to the target entity does not match the expected entity type defined in the OData service. This can happen if:
  
  The wrong entity type is being referenced in the request.
  The JSON payload is incorrectly structured or contains unexpected data.
  There is a version mismatch between the client and server-side definitions of the OData service.
  
  
  
  Incorrect Configuration: The OData service might be incorrectly configured, leading to the wrong entity type being expected.
  
  
  Data Model Changes: If there have been recent changes to the data model or the OData service, the client application may not be updated to reflect these changes.
  
  
  Solution:
  
  
  Check the JSON Payload: Review the JSON data being sent to ensure that it matches the expected structure and entity type defined in the OData service. Make sure that the entity type in the payload corresponds to the entity type expected by the service.
  
  
  Verify OData Service Configuration: Check the configuration of the OData service in the SAP Gateway. Ensure that the entity types are correctly defined and that the service is properly registered.
  
  
  Update Client Application: If there have been changes to the OData service, ensure that the client application (e.g., Fiori app) is updated to reflect these changes. This may involve regenerating the client-side code or refreshing the metadata.
  
  
  Debugging: Use debugging tools to trace the request and response. This can help identify where the mismatch is occurring. Look for logs in the SAP Gateway to see if there are any additional error messages that provide more context.
  
  
  Check for Versioning Issues: If you are using different versions of the OData service, ensure that the client is compatible with the version of the service being called.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  OData Documentation: Review the OData documentation for best practices on structuring requests and handling entity types.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.