my father purchased a property 20 years ago , now when i was about to resell that flat i show shocked to find that its showing as a 1RK while we purchase 1BHK and paid for that and the regitration and stamp duty all were paid for that 550 sq.f as mentioned on the registration,convience deed papers while the 1RK on the blueprint is showing as 100 sqt flat, its by the way a ground floor flat, what should i do ? is that a problem if i resell it and will that be a problem during redevlopment?