We can call subroutines by using PERFORM command. 
we can use it to call the subroutine of another program by including “IN PROGRAM” in the perform statement.

Ex: PERFORM f_compute_tax IN PROGRAM ZAU_TEST using lv_value changing lv_result.

The above code will call the subroutine f_compute_tax of the ABAP program ZAU_TEST. It is important to note that if we are using program ZAU_TEST like this , it will not come in where used list of the program. Suppose one deletes the program ZAU_TEST after seeing no program are using the program, the above code will give dump.


Serkan AKKAVAK
Computer Engineer
serkurumsal@yandex.com