We are attempting to integrate with SAP directly in our application. Here is an example of an RFC, and input parameters:

We are unsure on how we could fill the needed table input parameters before making the SAP call. Also, is there any documentation regarding SAP direct connect?

If you go to the Data section of Service Studio, you can see that SAP brought some new structures. The inputs data type are all available.

You can create variables of each required type to fill the input structures.

If the input is a list, you can use List Append to combine similar structured records into a single list.