Rule library
FatalField 16.003Subject
UAD1661 — Indicate whether the highest and best use of the property is maximally productive.
Where this rule lives in the report
Highest and Best Use
Maximally Productive
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
MaximallyProductiveIndicator is not provided- Data Point Name
MaximallyProductiveIndicator- Unique ID
3100.0005- Report Field ID
16.003- What this field means
- When true, indicates that the current use of the property is maximally productive.
How to fix UAD1661
UAD1661 is a Fatal UAD 3.6 edit, so clear it before the appraisal report goes to UCDP.
- 01Open the Highest and Best Use › Maximally Productive area of the URAR and find Maximally Productive.
- 02Check the condition that triggers UAD1661: MaximallyProductiveIndicator is not provided.
- 03Correct the missing, invalid, duplicate, or inconsistent value before submitting to UCDP.
- 04Use the official Single-family (SF1) sample value on this page as a reference pattern, then re-run validation.
This fix guidance is derived from the published rule message, trigger logic, report location, field definition, and official sample data available for this rule.
Seen in the sample reports
How this field is populated in the official UAD 3.6 sample scenarios.
trueSubjecttrueSubject