Function modules provide which types of parameters?

Function modules in SAP ABAP are designed to encapsulate specific functionality and can accept and return various types of parameters, which enhances their reusability and modularity. The correct answer highlights that function modules provide input parameters.

Input parameters are those values passed into the function module to perform processing or calculations. They allow the caller of the function module to supply specific data necessary for the function’s execution. This is essential for functions that need certain inputs to generate their results or perform their tasks accurately.

To complement this understanding, function modules also typically feature return values, output parameters, and exception handling. Return values are used for passing data back to the caller after the function processes the input. Output parameters work similarly, allowing the function to provide multiple results back to the caller. Exceptions are important for error handling but do not constitute a parameter type in the same category as input, output, and return values.

The distinction lies in the fact that function modules fundamentally rely on input parameters as the primary means for receiving necessary information to carry out their operations. This foundational concept is crucial for anyone engaged in SAP development, as it informs how functions are structured and utilized within the ABAP programming environment.