types of programs in sap abap
Type S Programs in SAP ABAP. These types of programs are basically containers for subroutines., these subroutines can be called from other ABAP programs externally. They are called as subroutine Pools. These types of programs cannot be run using a program name or a transaction code. Type I Programs in SAP ABAP.
TYPE F Programs in SAP ABAP. Type F programs are basically containers for Function Modules, these types of programs cannot be started using a transaction code or a program name. These can be called from other executable programs or Module Pool programs by inserting the code of the Function Module.