Because based on the information loaded into the return, the client didn't qualify for the contribution?

look at the IRA contribution worksheet and follow the money through the computation.

On the IRA Contribution Worksheet the maximum is $7,500 per taxpayer.  Line 1 is $7,500, Line 5 is $7,500, Line 9 is $7,500, Line 12 is $0.  On the IRA Deduction Worksheet, Lines 3 and 4 are $7,500 for each taxpayer; Lines 10 and 16 are $0.

I cant follow that.   Look at the worksheet between Lines 13 and 14, those quickzoom buttons should show you the calculation that makes the amount in excess.

does the taxpayer have earned income

Until some facts are presented, I think were all just stuck guessing.

Interest, dividend and rental income through K-1's, and I appreciate everyone's assistance.

None of that is earned income.

"Interest, dividend and rental income"

From: https://www.irs.gov/taxtopics/tc451

"To contribute to a traditional IRA, you, and/or your spouse if you file a joint return, must have taxable compensation, such as wages, salaries, commissions, tips, bonuses, or net income from self-employment."