I had mine rejected too due to what CRA sadi was a mismatch in capital gains from my T3 reported on Schedule 3 and on form T936. The fix for me was twofold. First, I didn't split it with my spouse as that seemed to cause part of the error (we're only talking $44 in capital gains) - this means I put 100% in the entry field. Second, Box 52 and Box 53 of the T3 was causing the other part of the error - the difference between the two boxes were the before June/after June piece which is now irrelevant. Turbotax puts the before June amount in box 17599 of Schedule 3 and the after June amount in box 17600. Seems CRA only recognizes box 17600, so the fix was to put the entire capital gains amount in the Box 53 entry field for the T3 resulting in it going into box 17600 in Schedule 3. Once this was done, my and my spouse's taxes were accepted. I never went back to resplit the capital gains, so only the second part might be needed for the fix. Hope this helps.
