Thank you. I was finally able to remedy after trying a number of fixes. My 4th attempt to submit electronically was accepted by the IRS. To fix I had to change Part II A on Form 1116 to "12/31/2020" from "Various" for the "Date Paid & Accrued" . "Various" is more more precise (as all the foreign taxes were paid on dividends throughout the year) . "Various" was accepted without issue for my 2019 filing. I'm not sure if the validity check issue is a result of the IRS changing its validation algorithm or with TurboTax. Nevertheless, I was able to solve and submit. Thanks again.
