SAPforms Data Plug-In for Function Modules 
Definition
SAPData type plug-in for calling function modules and BAPIs with RFC capability.
Use
You can use this plug-in to design forms that use a function module interface. When the Start() method is executed, the import parameters of the function module are first supplied from the form controls. Following this, the function module in R/3 is called via RFC and the form control is supplied with the results from the export and tables parameters. If you use this plug-in, you do not need an SAPXmit plug-in. The Data plug-in is also responsible for communication with the R/3 System.
This plug-in implements the SAPData interface that provides the
SAPforms Designer and other SAPforms components with access to certain types of R/3 data structures and interfaces. In other words, this plug-in can be regarded as being synonymous with the associated SAPData class.Classification
SAPforms Data Plug-In for Function Modules
à Field
à
Fieldsà
SAPDataProperties
You can maintain the following properties for this plug-in:
If you have selected this indicator, you must chose the R/3 System, in which the function module is to be called, every time you execute the form. If you have not selected this indicator, the RFC is executed in the system you specified when you defined the form.