Differences between Subroutines and Function Modules in SAP ABAP.

 What are the differences between Subroutines and Function Modules?

Differences between Subroutines and Function Modules.

Subroutines	Function modules
1. These are local. We can access the       Subroutine within the server only.	1. These are global. We can access the     function module with in server as well as     Outside the server.
2. We can’t execute the subroutine independently	2. we can execute function module independently using the T-code SE37
3. Subroutines can’t handle the Exceptions.	3. Function module can handle the errors     through Exceptions.