UAD1764
FATALOfficial message text · Appendix H-1: UAD Compliance Rules — URAR, v1.5
Each dwelling must contain at least one living unit.
Fatal — a single unresolved Fatal makes the entire submission come back NOT SUCCESSFUL (UCDP Hard Stop 401).
What triggers UAD1764
The published rule logic, verbatim:
If ImprovementType = ‘Dwelling’ and there are no instances of PROPERTY_UNIT
- • Checked for the Subject property.
- • Bound to MISMO data point
PROPERTY_UNITat../VALUATION_ANALYSIS/PROPERTIES/PROPERTY/IMPROVEMENTS/IMPROVEMENT/PROPERTY_UNITS/PROPERTY_UNIT/
How to fix it
On the URAR, this lives at: Unit Interior. Complete or correct that field in your form software, regenerate the package, and re-check before submission.
Because this is a Fatal edit, do not submit until it is resolved — one Fatal bounces the whole package.
UAD1764 is in UADCheck's reference library; automated coverage for it is on the roadmap. The inspection already runs the full GSE schema, the package-integrity layer, and every auto-checkable compliance rule — each report states exactly what was covered.
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Source: Appendix H-1: UAD Compliance Rules — URAR, v1.5 (public GSE document). Verified against the published spreadsheet; not affiliated with Fannie Mae or Freddie Mac.