What to do if I enter wrong details in Passport application- cancel ?

hi i booked appointment on 1st july for passport and i payed the fees online.later i came to know that one of my details i entered is wrong and now i have to change it before the appointment date...what shall i do now,shall i cancel it r is there any other options..

i wrongly entered my info for passport and got an appointment and so i tried to cancel it ..but i couldnt cancel it,it needs suname for cancelling and thats the mistake i made,i didnt gave any surname..what shall i do now..pls help...my appointment is on 1st july:(:(

I think you should not cancel it, just go for appointment and tell them the mistake , most of the time if you have proof and proper documents with you, they can help you instantly.