Enter the code V on the box 17 screen, but leave the amount box blank. Then, Continue through the K-1 interview after you have entered your code V on the box 17 screen. Later in the interview questions is a screen titled "We need some more information about your 199A income or loss". This screen must be completed with the box 17 code V Section 199A Statement or STMT that came with your K-1, in order for your QBI deduction to be calculated.
When you check the boxes next to the lines on that screen you need (the descriptions that match your three items), a place will open up to enter your amounts.
To get back to the K-1 summary screen and find the Schedule K-1 to edit, click the "magnifying glass Search" icon on the top row, enter "k-1" in the search window and press return or enter, and then click on the "Jump to k-1" link to find the K-1 you need to edit.
Here is a screenshot of the screen to enter your Section 199A Statement/STMT information:

**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"