The mop up round is where the unfilled, vacant seats are filled. The unfilled and vacant seats from Central pool are transferred and even they are added in Mop up round. As of now, candidates whi have been allotted seats have time until August 5th to join their respective colleges. Once that period is over, the exact no.of seats lying vacant will be revealed. And based on that mop up round will start begin tentatively from the last week of August. So we need to wait atleast until August 6th to check the vacant seats availability