I called the TurboTax support today. The rejection reason was "Fed_1116_Carryover_Foreign_Taxes - There is a potential issue with the calculation of the carryover of foreign taxes."
According to the TurboTax support representative, the Form 1116 is not finalized yet. It's supposed to be updated on 3/18.
So, it seems I'll have to try to update TurboTax desktop after 3/18, and try again.
We'll see how it goes.
