How do I k now if my LLC qualifies for QBI deduction.

For some reason this year is the first time I am seeing the question about the  Z in Box 20 of the K1.  I did my 1065 and K1s but did not put the Z.   My LLC is just my wife and me and we make less than the 383K threshold,    How can I figure out how to claim the QBI deduction?