Evaluating Function Modules Using SAP Assistant (SAP Library

Evaluating Function Modules Using SAP Assistant

Before you call function modules from the R/3 system within a frontend application, first execute and test the application. Make sure to have a complete description of all interface parameters.

Task

Call function module RFC_CUSTOMER_GET to display customer data from the R/3 system and analyze its interface definition.

Overview: Unit Objectives

In this unit you will learn how to use the SAP Assistant as a tool for

retrieving the interface definitions of function modules in the R/3 system.
calling and evaluating a function module.

Prerequisites

The function module you want to call is installed in the target system and flagged as "remote".

The RFC SDK (Software Development Kit) is installed on the frontend. Thus, after the installation, the SAP Assistant as a component of the RFC SDK is automatically available at the frontend.

Basics

There are two ways of evaluation function modules and of retrieving their interface definitions:

Using SAPGUI for direct access.
Using the SAP Assistant tool. In this case, you need not install SAPGUI on the PC.

The SAP Assistant is an easy-to-use tool for evaluating RFC functions of the R/3 system online. It executes the function calls even though the user did not program them explicitly.

SAP Assistant uses the OLE Automation technology. The current version is 2.0/2.1. Compared with the previous version 1.0, the new version has a 32-bit implementation and uses OCX technology.

How to Continue

Exercise 1: Call Function Module