How To Fix /UI2/CDMFCC_CHECK055 - Unexpected member &3 in json of (&1) &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/CDMFCC_CHECK -

• Message number: 055

• Message text: Unexpected member &3 in json of (&1) &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/CDMFCC_CHECK055 - Unexpected member &3 in json of (&1) &2 ?

  The SAP error message /UI2/CDMFCC_CHECK055 Unexpected member &3 in json of (&1) &2 typically indicates that there is an unexpected or unrecognized member in a JSON object that is being processed by the SAP Fiori application. This error can occur during the communication between the frontend and backend systems, particularly when the JSON data structure does not match the expected format.
  Cause:
  
  Schema Mismatch: The JSON data being sent or received does not conform to the expected schema. This could be due to changes in the backend data model or API that are not reflected in the frontend application.
  Versioning Issues: If there are different versions of the frontend and backend components, they may not be compatible, leading to unexpected members in the JSON.
  Custom Development: If there are custom fields or modifications in the backend that are not accounted for in the frontend, this can lead to unexpected members being included in the JSON response.
  Data Corruption: Sometimes, data corruption or incorrect data entries can lead to unexpected values being returned in the JSON.
  
  Solution:
  
  Check JSON Structure: Review the JSON structure being sent or received. Ensure that it matches the expected schema defined in the OData service or API documentation.
  Update Frontend/Backend: Ensure that both the frontend and backend components are updated to compatible versions. If there have been recent changes in the backend, make sure the frontend is aware of these changes.
  Debugging: Use debugging tools to inspect the JSON data being processed. This can help identify where the unexpected member is coming from.
  Adjust Custom Code: If there are custom developments, review the code to ensure that it is correctly handling the data and not introducing unexpected members.
  Consult Documentation: Refer to the SAP documentation for the specific Fiori application or OData service to understand the expected JSON structure and any recent changes that may have been made.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can provide insights or solutions.
  OData Service Metadata: Review the metadata of the OData service to understand the expected structure and properties of the JSON response.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurs.