TurboTax is probably just asking you to confirm that there are no entries in those boxes. If there are no amounts in boxes 12 or 15 (state and local taxes withheld) make sure that boxes 12-17 are empty. Then click continue.
Boxes 12–17. State and Local Information
These boxes and Copies 1 and 2 are provided for your convenience only and need not be completed for the IRS. Use the state and local information boxes to report distributions and taxes for up to two states or localities. Keep the information for each state or locality separated by the broken line. If state or local income tax has been withheld on this distribution, you may enter it in boxes 12 and 15, as appropriate. In box 13, enter the abbreviated name of the state and the payer's state identification number. The state number is the payer's identification number assigned by the individual state. In box 16, enter the name of the locality. In boxes 14 and 17, you may enter the amount of the state or local distribution.
https://www.irs.gov/instructions/i1099r
