Hello Stuti,

As per the official, Your application number will be generated only after the payment of the application fee, Without payment of the application fee the application will not be registered. Have you successfully registered?

Officially there is no any information given for the correction of the application form. For further you can refer the below given link Page No. 12 to check the information.

CMC Vellore Admission Prospectus

Or I would suggest you to contact the officials.

Good Luck!