Hello Varadha,
You have ask the most common question that is being asked and answered repeatedly on this forum.
It's quite confusing with abap, hanna... SAP HR, SAP ERP, etc.
It is HANA not hanna...
Thanks in advance ppl.
SMS language is forbidden in this forum.
I would strongly advise you to have good look at the blogs and threads that would give you a good idea.
FAQ: Different Career Paths in SAP
FAQ: What is the best SAP module for me?
Every module has its own merits for good consultants. Therefore, you should have an overview of each module what it is doing and then please correlate your experience with that module. Module is something you must select on your interest, where your passion and commitment lies.
Hope this helps you.
Kind Regards,
Ravi