Same problem. Two hours on phone with TurboTax help and they finally just told me to cheat- to enter Z instead of I. Well this works but is not truth… and denies me a significant QBI deduction!  I am stuck and cannot file. Error message tells me to enter income data for section 199A on schedule A …which I have done now countless times with and without TurboTax supervision. Final solution from them was for me use code Z instead of I which makes me lie and lose money too.