Respected sir...
You have to file a recovery suit in a civil court of your jurisdiction District and the amount of the Court fee will be applicable @ 4% of the amount to be claimed when the amount is above 20 Lacs of Rs.In your case is 4% of 50 Lacs will be the court fee which is to be filed at the time of the recovery suit or with the exemption application.w.e.f 01.10.12....
Thanku