Why is it saying “Do you want to recalculate the taxable portion of your refund?” Does that mean I have to submit amended taxes for 2016.

Entered in my state refund in the income section like it says to and then got the notice of recalculating so I followed the steps in 2016 TurboTax to make changes but now my question is that it changes the 2016 state to zero on changes my federal slightly does that mean I have to refill/amend my 2016 taxes or how does that all work. I’m really confused by this notice haven’t seen it before.