The statement A would not be in TurboTax, it would be included with your Schedule K-1. I believe you may have enter code "Z" in the box 20 entry on your K-1 schedule entry. If so, you need to enter an amount for the associated section 199A (QBI) income. You may need to see the documentation included with your schedule k-1 to find that amount, but often it is the same amount listed as income on the K-1 schedule, in boxes 1 to 3.
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