/IWFND/MED198 - Service parameters '&1','&2' have invalid value / format.

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/MED -

• Message number: 198

• Message text: Service parameters '&1','&2' have invalid value / format.

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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AnswerBot

• What is the cause and solution for SAP error message /IWFND/MED198 - Service parameters '&1','&2' have invalid value / format. ?

  The SAP error message /IWFND/MED198 indicates that there is an issue with the service parameters being passed to an OData service. Specifically, the parameters &1 and &2 have invalid values or formats. This error typically occurs in the context of SAP Gateway services when the request parameters do not conform to the expected format or value constraints defined in the service.
  Causes:
  
  Invalid Parameter Values: The values being passed for the parameters do not match the expected data types or formats. For example, if a parameter expects a date format and receives a string, this error may occur.
  Missing Required Parameters: If required parameters are not included in the request, it can lead to this error.
  Incorrect Parameter Names: If the parameter names in the request do not match the expected names defined in the OData service, this error can be triggered.
  Service Configuration Issues: There may be issues with the service configuration in the SAP Gateway, such as incorrect data types or constraints defined in the service metadata.
  
  Solutions:
  
  Check Parameter Values: Review the values being passed for the parameters in the request. Ensure they conform to the expected data types and formats. For example, if a date is expected, ensure it is in the correct format (e.g., YYYY-MM-DD).
  Verify Required Parameters: Ensure that all required parameters are included in the request. Check the service documentation or metadata to identify which parameters are mandatory.
  Correct Parameter Names: Double-check the parameter names in the request against the service definition. Ensure that they match exactly, including case sensitivity.
  Review Service Metadata: Use the SAP Gateway Client (transaction /IWFND/GW_CLIENT) to test the service and review the metadata. This can help identify the expected parameters and their formats.
  Debugging: If you have access to the backend, you can debug the service implementation to see how the parameters are being processed and where the error might be occurring.
  Consult Documentation: Refer to the SAP documentation for the specific OData service you are using to understand the expected parameters and their formats.
  
  Related Information:
  
  SAP Gateway: The SAP Gateway is a technology that allows you to connect devices, environments, and applications to SAP systems. It enables the creation of OData services.
  OData Services: OData (Open Data Protocol) is a standard protocol for building and consuming RESTful APIs. Understanding OData conventions can help in troubleshooting issues related to service parameters.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /IWFND/MAINT_SERVICE for managing OData services and /IWFND/GW_CLIENT for testing services.
  
  By following these steps, you should be able to identify and resolve the issue causing the /IWFND/MED198 error in your SAP environment.