How To Fix /IWFND/CM_V4_RUNTIME002 - Transformation error on deserialization

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_V4_RUNTIME -

• Message number: 002

• Message text: Transformation error on deserialization

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_V4_RUNTIME002 - Transformation error on deserialization ?

  The SAP error message /IWFND/CM_V4_RUNTIME002 Transformation error on deserialization typically occurs in the context of SAP Gateway and OData services. This error indicates that there was a problem during the deserialization process of the OData response, which means that the system was unable to convert the incoming data into a format that can be processed by the application.
  Causes:
  
  Malformed JSON/XML: The incoming data may not conform to the expected JSON or XML format, leading to deserialization issues.
  Data Type Mismatch: The data types in the incoming payload may not match the expected types defined in the OData service.
  Missing Fields: Required fields may be missing from the incoming data, causing the deserialization to fail.
  Incorrect Metadata: The metadata of the OData service may not match the structure of the incoming data.
  Version Mismatch: There may be a version mismatch between the client and server, leading to incompatibility in data formats.
  
  Solutions:
  
  Check Incoming Data: Validate the incoming JSON/XML payload to ensure it is well-formed and adheres to the expected structure.
  Review OData Service Metadata: Ensure that the metadata of the OData service is correctly defined and matches the structure of the incoming data.
  Debugging: Use transaction codes like /IWFND/ERROR_LOG to check for detailed error logs that can provide more context about the issue.
  Adjust Data Types: Ensure that the data types in the incoming payload match the expected types in the OData service.
  Update OData Service: If there are changes in the data model, ensure that the OData service is updated accordingly.
  Test with Postman or Similar Tools: Use tools like Postman to send requests to the OData service and check the responses for any discrepancies.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific version of SAP Gateway you are using.
  OData Documentation: Review the OData documentation for best practices on structuring requests and responses.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they found effective.
  
  By following these steps, you should be able to identify the root cause of the deserialization error and implement a suitable solution.