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

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

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