Absconded from my current company

The claim from the employer may not be legally enforceable. However, the facts posted suggest that there could be BGV issues during future employment. Try to settle the matter amicably.

Terms and conditions of your appointment which has been accepted by you shall prevail.

why do you want to create problem when you do not have any?

As in ? Didn't get you ?

WHY YOU WANT TO CREATE A RPPOBLEM WHEN YOU DO NOT HAVE A PROBLEM.

You are required to serve notice period or pay in lieu thereof in terms of your letter of appointment. If your letter of appointment contain clause of serving notice period of 1.5 months or payment in lieu thereof, they you are legally required to pay. If not, there is nothing to worry. The actual wordings of the appointment is required to be considered first before coming to any conclusion. 

Assuming that you have such clause of notice pay in your letter of appointment, then you are required to serve notice period or pay in lieu thereof failing which the company has the legal right to recover the outstanding notice pay from you by issuing demand/ legal notice (which I can assume has been already sent) before taking you to court of law. 

However, most company do not go beyond sending demand/ legal notice since going to court (in India) is very time consuming and expensive and may not be worth pursuing for the management.