FORM UC-36 (REV. 09-2026)UCDP MANDATE: 2026-11-02
UADCHECKPre-submission inspection of UAD 3.6 packages

UAD1016

FATAL

Official message text · Appendix H-1: UAD Compliance Rules — URAR, v1.5

The 'Dwellings Containing Units' does not equal the number of structures identified as a dwelling.

Fatal — a single unresolved Fatal makes the entire submission come back NOT SUCCESSFUL (UCDP Hard Stop 401).

What triggers UAD1016

The published rule logic, verbatim:

If DwellingCount does not equal the number of instances of IMPROVEMENT_DETAIL with ImprovementType = "Dwelling"

  • Checked for the Subject property.
  • • Bound to MISMO data point DwellingCount (%PV%) at ../VALUATION_ANALYSIS/PROPERTIES/PROPERTY/PROPERTY_DETAIL/

How to fix it

On the URAR, this lives at: Subject Property → Dwellings Containing Units (%PV%). 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.

UAD1016 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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Related messages

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.