Try using these steps for this question for Schedule K-1 Box 20 Code Z needing Statement A.
Be sure to answer all the questions, as TurboTax Expert DavidS127 notes regarding inputting details for Box 20 Code Z: Continue through the K-1 interview after you have entered your value for box 20 code Z.
Enter the code Z when you enter the K-1, but you don't need to enter an amount.
Continue on, and there is a screen near the end of the interview titled "We need some more information about your 199A income or loss".
This screen must be completed in order for your box 20 code Z information to be correctly input into TurboTax.
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