Never go to Karvy. Annoying Customer Support. I have been calling them 25-30 times, but I didnt get a chance to talk with their customer care representative. Their tips are also too worst. They will highlight their tips which are positive on the trading, but if u completely follow their tips you may trap. The positive to negative ratio is 50 to 50. You may go losses with their tips.
You have to submit lots of documents for each option. For ex: separate documentation for equity trading and separate documentation for IPO subscription, and separate documentation for Commodity etc..
It is not one stop go. I suggest not to go for Karvy.