The mistakes in form filling happen frequently. 

It is advised to email the authorities immediately stating your application ID and the details of the correction to be done.

They would surely help you out in correcting the form.

And do it before the exam and get an email reply from them.

All the best.

Hi Dear 

First you have to mention that for which exam you are asking so we can help you in a best possible way 

i hope this information is helpful for you 

for more queries just contact with us 

thank you 

good luck 

Which entrance are you talking about? Please provide more details