199A dividends are a subset of ordinary dividends that are reported in box 1. These are dividends that qualify for the qualified business income (or QBI) deduction. 199A dividends usually comes from Real Estate Investment Trusts (REITs) or certain other investments. If you don't have these types of investments, you might not have any 199A dividends to report.
Look for any supplemental information the brokerage provided with the 1099-DIV. Sometimes the brokerage includes these details in those statements. Additionally, you can contact your broker directly so that they can tell you if any of your dividends qualify as 199A dividends.
