The new tax law changed the tax forms and on Schedule 1 you can find the Additional income and Adjustments to income. You can view the form Schedule 1 here: https://www.irs.gov/pub/irs-pdf/f1040s1.pdf. If TurboTax states that you have Schedule 1 then you either had one of the additional incomes or one of the adjustments to income on your tax return.