Deductions & credits

FWIW, according to ChatGPT, these are scenarios when you may want to make a "carryback "adjustment." The way I think of an "adjustment" is this: TT calculates that you have $x of excess foreign tax credit (that is, amount of foreign taxes paid is greater than the amount utilized in a given year). You then get to choose whether you want to carry that excess forward ("carryover") or back ("carryback"). My understanding is that, by default, TT does a carryover, so essentially the "carryback adjustment" is a way of telling TT that you want to carry back some of the excess instead. If someone could confirm that that understanding is, that would be great.

EDIT: see the following link for example reasons for carryback adjustments: https://ttlc.intuit.com/community/tax-credits-deductions/discussion/potential-typo-how-to-carry-back...