You call up a main schema using transaction PE01 (HR: Maintain Payroll Schemas) and you...

 When you call up a main schema using transaction PE01, you have the following columns available in the editor:

Line: This column shows the line number of each entry in the schema. It is used to identify and navigate the schema entries.

Function: This column shows the name of the function that is executed by the payroll driver. A function can be a payroll operation, a personnel calculation rule, or a sub-schema. A function can have one or more parameters that define its behavior and output.

Parameter: This column shows the parameters that are passed to the function. Parameters can be constants, variables, or expressions that modify the function’s logic or input.Parameters are separated by commas and enclosed in brackets.

Feature: This column shows the name of the feature that is used to determine the value of a parameter. A feature is a decision tree that evaluates certain conditions and returns a value based on the outcome. Features are used to customize the payroll schema for different scenarios or requirements.

Return Code: This column shows the return code that is generated by the function. A return code is a numerical value that indicates the status or result of the function execution. Return codes can be used to control the flow of the schema or to trigger certain actions.

The columns B. Feature and D. Return Code are not always visible in the editor. They can be displayed or hidden by using the menu options View -> Feature or View -> Return Code. Therefore, they are not correct answers to the question.

References =

SAP Help Portal: Payroll Schema

SAP Community: Understanding functions in Payroll Schemas