Differences between Macro & subroutine in SAP ABAP.

 What are the differences between Macro & subroutine?

Differences between Macro & subroutine in SAP ABAP.

Macro	Subroutine
1. Definition & calling in the same program.	1. Definition & calling may/may not in the same     Program.
2. Definition should be the 1st & calling should be     The next.	2. Calling should be the 1st & Definition should      Be the next.
3.  Macros can take up to 9 inputs.	3. Subroutines can take any no of inputs.
4. Macros cannot be debugged.	4. Sub-routines can be debugged at run time.