@Iwantthetruth92 As I and others have posted, and as advised by a TurboTax agent, enter your values in "Capital Gains" Box 21, 52, & 53 and don't enter anything as "Foreign Capital Gains". This eliminates the errors and allowed me to NetFile successfully.
This is a TurboTax entry screen software error and no longer a CRA issue. It looks like the forced duplication of the same value in both Capital Gains and Foreign Capital Gains Box 21 is the problem. Not sure why these two sets of boxes exist in TurboTax - There is no such distinction on the T3 Statements posted to My Account. It was my own interpretation of the contents of the investment funds that led me to class some Capital Gains and some Foreign Capital Gains. As well, the drop down box listing source as USA, Other Country #1, Other Country #2 doesn't look right.
