/IWFND/MED171 - Service parameter '&1' has an invalid value / format : '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/MED -

• Message number: 171

• Message text: Service parameter '&1' has an invalid value / format : '&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.

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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AnswerBot

• What is the cause and solution for SAP error message /IWFND/MED171 - Service parameter '&1' has an invalid value / format : '&2' ?

  The SAP error message /IWFND/MED171 indicates that there is an issue with a service parameter in an OData service. Specifically, it states that the service parameter &1 has an invalid value or format, which is represented by &2. This error typically occurs in the context of SAP Gateway services when the parameters passed to the service do not meet the expected criteria.
  Cause:
  
  Invalid Parameter Value: The value provided for the service parameter does not conform to the expected format or type. For example, if a parameter expects a numeric value but receives a string, this error may occur.
  Missing Required Parameter: If a required parameter is missing or not provided in the request, it can lead to this error.
  Incorrect Data Type: The data type of the parameter may not match what the service is expecting (e.g., passing a date in an incorrect format).
  Service Configuration Issues: There may be issues in the service definition or configuration that lead to the parameter being incorrectly defined.
  
  Solution:
  
  Check Parameter Values: Review the values being passed to the service. Ensure that they match the expected format and data type as defined in the service metadata.
  Review Service Metadata: Use the SAP Gateway Client (transaction /IWFND/GW_CLIENT) to check the service metadata and understand 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 occurs.
  Adjust Request: Modify the request to ensure that all parameters are included and formatted correctly. This may involve changing the data type or correcting the value.
  Consult Documentation: Refer to the documentation for the specific OData service to understand the expected parameters and their formats.
  
  Related Information:
  
  Transaction Codes: 
  
  /IWFND/MAINT_SERVICE: To maintain OData services.
  /IWFND/GW_CLIENT: To test OData services and view metadata.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address known issues with specific OData services or parameters.
  Community Forums: SAP Community and other forums can be helpful for finding similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.