I just tried it in the online TurboTax and got the same error - basically saying I must file by mail. Looks like that's TurboTax's "solution".Will definitely be...
Thanks for replying. Yes - in round numbers, without the carryback line 14 is $400 and line 21 is $4,000. I have $1,900 to carry back to 2019 from 2020, which w...
Same issue for me - form matches up completely with last year, passes all TurboTax checks, but was rejected with that error. Rechecked and resubmitted, rejected...