Answer Posted / sivaramakrishan.s

see guys this subroutine consept is very importent , mostly
we use in abap reports.

Routine is nothing but the subroutine , this is one of the
way how we reach modularization technich for better
readability and better reusebility in abap.

we use subroutine in two ways as below

subroutine declararion :
Perform subroutine name .

double click on subroutin name and create it .

here the implementation of subroutine cab be in two ways
like local subroutine and global subroutine .

if it is internal subroutine the calling of subroutine is
as said above with perform statement.

if it is global subroutine it is as below.

perform subroutine name if found in program.

here above the program indicated that this program consist
the subroutine implementation.

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