Turbo tax has entered a REIT dividend amount that has no basis. I've overridden with zero, but Turbo tax won't let me submit the return. Is there an alternative?

Yes, line 9 of the Qualified Business Income Summary comes from Schedule K-1. Line 14 comes from the Carryover worksheet for QBI.

If you just override these amounts you won't be able to e-file your tax return. 

Do you have a Schedule K-1? If so, is it from a 1120-S, 1065, or 1041?

@Tom D2 --

Did you receive a 1099-DIV with Section 199A dividends in Box 5?  A Section 199A dividend qualifies for the Section 199A qualified business income deduction.