Goldiegirl
Like Foxbat, I don't have a solution either. But it is super weird as line 3a is an auto-entry that TT is making from your 1040. It's doesn't appear to be anything you can enter or should override.
Just a dumb suggestion: are all the boxes properly checked on your 1040 Worksheet (there is also a Standard Deduction Worksheet you can check out). As that generates your standard deduction on 1040 line 12 which then is auto-entered to line 1116 3a.
Could it be that your filing status doesn't match your standard deduction? Just pulling at a straw. Apologies if you already checked this.
Otherwise paper filing can get the job done with no more frustrations or calls to TT.
