Each SAP function has scalar input parameters (input values to the function) and scalar output parameters (output values from the function). The SAP function performs calculations with the values you assign to the scalar input parameters. The SAP function outputs the result of the calculations in the variables you assign to the scalar output parameters.

Some SAP functions may also have changing and table parameters. The Source Analyzer displays information such as the parameter name and parameter type for each parameter. You can assign source fields, constants, and variables to function parameters.