How To Fix FITP199 - API Interface: Error in parameter transmission

SAP Error Message - Details

• Message type: E = Error

• Message class: FITP -

• Message number: 199

• Message text: API Interface: Error in parameter transmission

What causes this issue?

Invalid values were transferred as parameters when an API module was
called. Consequently, the module could not be correctly called on the
reservation system side.

System Response

The process is terminated.

How to fix this error?

Contact your system administrator.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FITP199 - API Interface: Error in parameter transmission ?

  The SAP error message FITP199, which states "API Interface: Error in parameter transmission," typically occurs when there is an issue with the data being sent to or received from an API interface in SAP. This error can arise from various causes, including incorrect parameter values, data type mismatches, or issues with the API configuration.
  Causes:
  
  Incorrect Parameter Values: The parameters being sent to the API may not match the expected values or formats.
  Data Type Mismatch: The data types of the parameters may not align with what the API expects (e.g., sending a string where a number is expected).
  Missing Required Parameters: Some required parameters may not be included in the API call.
  Configuration Issues: There may be issues with the API configuration in SAP, such as incorrect endpoint URLs or authentication problems.
  Network Issues: Connectivity problems between the SAP system and the API endpoint can also lead to this error.
  
  Solutions:
  
  Check Parameter Values: Review the parameters being sent to the API and ensure they are correct and in the expected format.
  Validate Data Types: Ensure that the data types of the parameters match what the API documentation specifies.
  Include All Required Parameters: Verify that all mandatory parameters are included in the API call.
  Review API Configuration: Check the API configuration settings in SAP, including endpoint URLs, authentication methods, and any other relevant settings.
  Test Connectivity: Ensure that there are no network issues preventing communication with the API endpoint. You can use tools like ping or curl to test connectivity.
  Consult API Documentation: Refer to the API documentation for specific requirements and examples of valid requests.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the FITP199 error. SAP Notes often provide insights into specific problems and their resolutions.
  Transaction Codes: Use transaction codes like SLG1 (Application Log) to check for detailed logs related to the error, which can provide more context.
  Debugging: If you have access, consider debugging the API call to see the exact parameters being transmitted and identify any discrepancies.
  Community Forums: Engage with SAP community forums or support channels for additional insights and shared experiences from other users who may have encountered the same issue.
  
  By systematically checking these areas, you should be able to identify and resolve the cause of the FITP199 error in your SAP system.