I also just received the same error message. Tearing the hair out trying to figure out what tripped this error message as I didn't file AMT in 2021 or 2022.
I'm going to go back and see if I can find the data from Schedule D Lines 7 & 15 from 2021 etc.
For fun, I unchecked the "Yes" box and checked the "NO' box.
The warning error disappeared immediately. That may be the simplest & easiest answer to the SNAFU.
