Hello, Aspirant...

It would not be a problem if you neglected to choose lock before the JAC Delhi counselling deadline. Your most recent saved choices will be automatically locked.

If you don't choose anything, the JAC won't know what to do with you, and you won't be able to get into any college through counselling.

Please seethe following website for more information.

https://engineering.careers360.com/articles/jac-delhi-counselling

All the best.