Hello, Hitendra. In order to retain your seat and remain in the counselling process you will have to undergo the process of document verification even if you have not got your desired branch or college. If after the allotment of a seat you do not undergo the process of document verification then josaa will consider that you do not wish to participate in the further rounds of counselling. To prevent this hassle you should only fill the choices in which you want to take admission and not all the choices. All the best.