I had the same problem (see below) but figured out where I was going wrong...
When entering the multiple box 17v entries, TT generates the Statement A section of the K-1. This requires re-entry of your business income (loss), section 179 deductions, etc. In other words, you have to re-enter some or all of the entries you previously entered for the K-1 into the section 199A QBI worksheet. I did this and the errors went away, AND I got an additional deduction.
Same problem. Entered box 17v amount O, then provided values for W-2 wages and unadjusted basis. Review came up with 2 errors (2 k-1s). Deleted all K-1 forms and tried again. Same errors. Tried entering code Y for QBI unadjusted basis, didn't work. Tried entering two separate code V entries, didn't work.
This is the last think I need to fix before filing. Has anyone found the solution??
