Confirmation of TaxNJPH's and others' solution: Prior to 2020 Form 1116 was accepted under date as "Various", this year TT automatically put RIC in the date field, taking it directly from the questions following the 1099 DIV forms. Changing the "RIC" date on Part II of the 1116 Worksheet to 12/31/2020 (changes 12/31/20 automatically) fixed this problem. The rejects took less than 5 minutes, acceptance took longer.
