RFC Parameter Mapping to C# 

RFC parameters fall into these categories:

·        IMPORT

Always pass values from the calling program to the function module unless this is marked as an optional parameter.

·        CHANGING

These are passed to the function module from the calling program and are then passed back to the program.

·        EXPORT

These are passed from the function module to the calling program unless marked as an optional parameter.

·        TABLES

These represent an array of SAP structure instances. They can be IN or OUT parameters.

·        IMPORT, EXPORT, CHANGING

These parameter types cannot be tables. They can be structures or other simple data types.

·        OPTIONAL

Parameters can also be defined as optional.

 

A simple mapping of RFC parameter types to C# parameter types follows:

 

RFC Parameter Type	C# Parameter Type
IMPORT	IN
EXPORT	OUT
CHANGING	REF (In/Out)
TABLES	REF (In/Out)