As per the chart of 2AC total 17 boarded at CCT to BZA, TPTY out of 46 so vacant should be 29 but it's showing only 19 vacant upto SLO which is the first stop. So there is a gap of 10 berths similarly for 3AC 42 booked from CCT out of 128 but vacancy to SLo is 69 and there is a gap of 17 berths. I have opened the color code of fully booked end to end and complied the data for both classes. The gap of berths may be to enroute stations then TPTy. For further analysis I need to open every berth of the coach to get boarding at CCT check the vacancy after chart prepration at CCT/BZA from Ongl/NLR to Tirupati.