Tax form rejected for invalid zip code. Zip code is valid but review will not accept it.

Turbo Tax will not let me continue with my return because in the review stage it claims one of my 1099-R forms has an invalid zip code. In review I verified the zip was entered exactly as stated on the 1099-R. Review stage would still not accept it. I tried again by reentering the zip using the acceptable formats but no matter what I try it keeps getting flagged for an invalid zip code. I googled the zip code and it is valid. any help on this issue will be greatly appreciated. Thank You