The charitable deduction carryover is correct. My problem is that because of various limitations I was not able to use the entire 2020 carryover. Yet, TurboTax does not allow me to set forth on Schedule A the portion of the carryover that was used to determine the total 2021 charitable deduction. The total shown on Schedule A is correct, but because the full 2020 carryover was imported to Schedule A the listing of the full carryover prevented the components of the deduction (i.e., cash donations, property donations and stock donations) from adding up to the number TT used as the total deduction. Because those number don't add up, the return was rejected when I tried to e-file it.
