If your k1 is from an SSTB, then you will not have an amount in box 17V. Don't believe you have to mark the K1 for your 1040 you just will not have any 199A info

K-1s have 199A info and the box checked that they are a SSTB. Depending on the owner's income, they might get the 19A deduction for a SSTB.