Windows NT 4.0, Windows 95, or Windows 98 operating system
The SAP DCOM Connector installed
SAP R/3 Release 3.0D or higher
Restrictions
You cannot use the SAP Assistant to call an RFC that invokes a SAPGUI screen, be it a dialog or a window. You can determine if SAP Assistant fails as a result of calling such an RFC, by using Transaction SE37 in R/3 and checking if the RFC invokes a SAPGUI screen.
The BAPI wizard can generate C++ code for Windows NT or HP UNIX. To generate code for other platforms you need to create your own templates.