Prior year returns CPA preparer classified as Non-Passive and took the QBI deduction.........

I am trying to understand why it is non-passive also..............

Taxpayer is a 50% General partner.............business is a single tenant office building........

Other general partner is closer geographically and more involved in day to day decisions, which are minimal.

I never did figure out how to follow prior years by classifying as non-passive so I classified as passive,,,,,,,,,,,

I appreciate your reaching out to answer my question