1099-R Question: Is the IRA/SEP/SIMPLE box on the 1099-R checked? I can click on Yes or No. What if there is no box at all on the 1099-R form?

What if my 1099-R form does not have a box to check when Turbo Tax asks:  Is the IRA/SEP/SIMPLE box on this 1099-R checked?  Yes or No