How To Fix RSANA_UMM_API310 - Invalid signature type. Signature type must be 'Input' or 'Output'.

SAP Error Message - Details

• Message type: E = Error

• Message class: RSANA_UMM_API - UMM API Messages

• Message number: 310

• Message text: Invalid signature type. Signature type must be 'Input' or 'Output'.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSANA_UMM_API310 - Invalid signature type. Signature type must be 'Input' or 'Output'. ?

  The SAP error message RSANA_UMM_API310 indicates that there is an issue with the signature type specified in a function module or API call. The error message states that the signature type must be either 'Input' or 'Output', and it suggests that an invalid signature type has been provided.
  Cause:
  
  Incorrect Signature Type: The most common cause of this error is that the signature type specified in the API call or function module is neither 'Input' nor 'Output'. This could be due to a typo or incorrect configuration.
  Custom Development Issues: If you are using a custom-developed function module or API, there may be an issue in the code where the signature type is being set incorrectly.
  Data Mapping Issues: If the data being passed to the function module or API is not correctly mapped, it may lead to this error.
  
  Solution:
  
  Check Signature Type: Review the code or configuration where the API or function module is being called. Ensure that the signature type is explicitly set to either 'Input' or 'Output'.
  Debugging: If you have access to the ABAP code, you can set breakpoints and debug the function module to see what values are being passed for the signature type.
  Review Documentation: Check the SAP documentation for the specific API or function module you are using to ensure that you are following the correct usage guidelines.
  Consult with Developers: If you are not the developer, consult with your development team to ensure that the function module or API is being called correctly and that the signature types are properly defined.
  Testing: After making changes, test the function/module again to ensure that the error is resolved.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific function module or API you are using.
  SAP Community: You can also search the SAP Community forums for similar issues and solutions provided by other users.
  Documentation: Refer to the official SAP documentation for the specific module or API to understand the expected parameters and their types.
  
  By following these steps, you should be able to identify and resolve the issue causing the RSANA_UMM_API310 error.