Hello there!
Most probably you will get notifications from your college regarding the same thing.
In case you want to cancel the admission or are willing to make changes in your course structure, inform your university authorities about the same thing beforehand.
This will make the working for them easy and you will also get relief.

Hello,

If you don't appear for the exam and don't pay the fees then you'll be declared fail and you will be compelled to leave the University.

If this question has any relation with your previous one then I would suggest you to not cancel your Admission through this way of not appearing for exams or by not paying fees as it might create a bad student history which can hinder your future education.

Hope this helps,

All the best !