If my IRA contributions were entered with my W2, do I also need to enter them again in the deductions portion - or are they already accounted for?

All my contributions were through my work retirement plan and entered with my W2.
It asks for traditional and roth IRA contributions in the deductions portion and I'm not sure if I need to put the numbers in the system again. It majorly changes what I owe / refund if I do put the info in again.