The world is made up of errors and even people with much experience on a particular area do admit to errors.
Man isn't perfect and certain conditions, situations,and happenings may lead to error.
Have you mistakenly chosen the wrong course or institution? The foremost thing is admitting or identifying that there is an error, the process of ratifying it through JAMB is simple but not that expensive.
You can also correct your other details like your date of birth easily with this guide from jamb.org.ng:
₹ Log in (e-mail and password);
₹ When you see JAMB website available services, click Correction of DATA
₹ Choose JAMB change of course/ institution;
₹ After this you can see and get Transaction ID (in a bold red font); You will need to pay for an opportunity to fill in change of university form. You may pay immediately with your card, or pay in some ATM.
If you choose the latter, you need to provide your Transaction ID. If you want to pay on the website, enter your card details and make payment.
Note! Every change of data accounts to N2,500 charge.
₹ If it is successful, you will see something like a text area for Year of Exam and JAMB Registration Number;
₹ When you have entered this data, you will see new options for Preferred course/Institution;
₹ After submitting all the changes, JAMB change of course form will be forwarded; If your changes are approved, your datas would be automatically updated.
You will have to pay about N500 as charges for printing to the cyber operator. Goodluck!