Okay. I solved it and turbotax actually has it right. Use the Canada Training Credit Limit on NOA from 2021 for 2023 tax returns, not the Canada Training Credit...

I have the same issue. Seems you have to mail it in, according to other commenters. Turbotax seems to be ignoring or denying there is a glitch in the software.

I tried this and my return was still rejected. Dropped $500 from my NOA 2022 to $250 for the correct amount, but still got the same error. I expect I will have ...