If I did not underpay my state taxes last year, why must I fill out my previous year net tax on a Penalty for Underpayment of Estimated Tax form?

My amount of taxes paid was higher than the amount due, and I am expecting a refund. TurboTax is not allowing me to finish submitting my return without filling out my prior year tax liability on an AR2210 form Penalty for Underpayment of Estimated Tax