survij
Following up on what Foxbat said. I also do not know how to solve your 1116 issue with the Canadian RMD. But I can offer some methodology hints.
Since you say you have been doing this for 10 years, look back at your 2019 1040 filing and compare the 1116 from 2019 with the one which isn't working for 2020. Can you spot anything that's different? You may have to use Forms View to print off the 2020 1116 and the 2019 one so you can compare line by line. Something that's different will probably be the key to what's going wrong.
Also compare the 2020 1116 with the Form you received reporting the RMD. Is anything different from your RMD form? It could be the way TT is transferring the type of income in Part 1 line 1a or maybe even the category of income? But again just hints.
It is even possible that Various or some other non-date entry crept in as the Date Taxes Paid or Accrued in Part II. Which we all know is deadly to e-filing success.
This is the type of line by line analysis that Foxbat recommends (though but for TT we wouldn't have to do it). Patience and perseverance!
If you are sure there are no differences you can always default to a paper filing. 😊
Good luck!
