How does the interaction between the Dynpro and the ABAP/4 modules takes place ?
– A transaction is a collection of screens and ABAP/4 routines, controlled and executed by a Dialog processor. The Dialog processor processes screen after screen, thereby triggering the appropriate ABAP/4 processing for each screen. For each screen, the system executes the flow logic that contains the corresponding ABAP/4 processing. The control passes from screen flow logic to ABAP/4 code and back.
