Rule library
UAD1764FatalSubject

Each dwelling must contain at least one living unit.

Where this rule lives in the report

Unit Interior

Report Section as the GSEs define them — the black tab and grey bar you already read on the URAR.

Severity
Fatal — this blocks your UCDP submission and must be fixed before delivery.
Triggered when
ImprovementType = ‘Dwelling’ and there are no instances of PROPERTY_UNIT
Data Point Name
PROPERTY_UNIT

More rules in “Unit Interior”