1099-G Form

Why does TT prompt me to put in my state income tax return amount to determine whether it is taxable income ? It also asks whether my last year's return was itemized or standard deduction. I have always done standard deduction and have never received a 1099-G form from my state to file for a tax return I received. It is just strange to me.

 

Why would someone receive a 1099-G form anyway? Thank You.