No problem at all.Your application will not be rejected.You complete your preparation and give your exam peacefully.At the time of counselling you will get a chance to re-verify your details and correct them.So you can do it at that time.Don't worry dear

Hello,

Don't worry your application won't get rejected. At the time of admission they'll reverify your details then you can simply clear them about the mistake.

All the Best 

MANUBZR5