# Property is written but never observed

RuleID: portfolio.arch.12@1.0.0
Status: accepted-subset
Catalog snapshot: 4558458d

## V-ARCH-12 — Property is written but never observed

Property is written but never observed. It examines repository-wide reachability, dependencies, resources, and API boundaries. The result remains unknown when the required evidence is incomplete.

Status: accepted-subset

Current scope: Accepted scope: owned Int fields and closed source uses. Arbitrary reference effects and open-world consumers remain outside the boundary.

Evidence boundary: Required evidence must be complete for the selected immutable build snapshot. Otherwise the affected result is unknown.

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Language: en
Canonical: https://docs.swift-analyzer.com/en/catalog/portfolio.arch.12/
Source revision: 4558458d