If box 16 on the 1099-R is blank, how do you correct Form OR-40 and document that Oregon States taxes were withheld as shown on 1099-R?

When using TurboTax for Oregon State Taxes, Oregon State Taxes withheld on 1099R is not showing up on my form OR-40. TurboTax support said box 16 on 1099-R has to be filled but it is blank on my 1099-R and Oregon does not require this to be filled.