Deductions & credits

@pk thanks for the info. 

At this point I feel it is this capitol gains income that is leading to the missing tax payment. I was ready to pay and submit my taxes but when TT performs a review I have an issue with one of my form 1116s. I need to provide a detailed explanation. 

It is helpful that TT finds these errors, but this interface is confusing to me. I don't know where to go in the TT questionnaire to find out the context of this question. What is a detailed explanation here and how does it show the foreign tax reduction computation for line 12?