13a comes from orm 8995 - the QBI deduction. Generally, there are 3 sources: 1) from a pass-through k--1; 2) a profitable business operated directly by the taxpayer; 3) Section 199A dividends reported in box 5 of a 1099-DIV
if it's 1) you need to delete the 199A data on the k-1 worksheet
if it's 2) you can select that the activity does not qualify for QBI
if it's 3)you need to make sure box 5 on the 1099 is zero or blank
of
