If there are state taxes withheld in box 14 then enter the amount from box 1 in box 16. If there is nothing entered in box 14, the leave boxes 14, 15 and 16 blank (empty).
It would have been nice if somewhere it was stated that you must fill in line 16 on 1099-r, even though it was blank or $0, as it is not required by the state or federal governments, just by Turbo Tax. Never had this problem in the past. Very frustrated, as I have not been able to electronically file due to this, just keeps kicking me back to the 1099-r forms.
If any state tax was withheld by the Pension or IRA administrator, then entries in 14, 15, and 16 are required by the state, not just TurboTax.
However, as DoninGA said above, if there is no state tax withheld, there you do not need any entries in these three boxes.
The problems occurs when a fund administrator makes an unnecessary entry in one of the boxes when there was no state tax withheld. In this case, TurboTax has to ask you if this is correct, because we would not want you to accidentally leave out an important field.
@Grove Street