I called Turbo Tax and reread the tax forms today and discovered the problem in my return was that the 2019 tax numbers did not carry forward correctly.
The amount that did not carry over was Line 10 of Form 4562, Carryover or disallowed deduction from Line 13 of 2019 Form 4562. It did properly carryover on the Federal Carryover Worksheet, and this difference was the error that the error checker was finding. Unfortunately, the only solution was to start a new tax return, perform the transfer of 2019 taxes again, verify they transferred, and then redo the entire tax return in the new tax return.
