# PAT-0370 — Redundant Declaration

## Ontology Metadata

Code: PAT-0370
Version: PAT-0370@0.1.0
Ontology release: 0.1.0
Updated: 2026-05-10T00:00:00Z
Canonical URL: /workbench/patterns/redundant-declaration/

## Summary

A structural condition where multiple declarations produce equivalent structural effect without semantic differentiation.

## Primary Lenses

- LEN-0230 — Normalization Lens
  - URL: /workbench/lenses/normalization-lens/
  - Summary: Transforms structurally equivalent variants into a canonical form to prevent false divergence.
- LEN-0150 — Conflict Lens
  - URL: /workbench/lenses/conflict-lens/
  - Summary: Detects mutually incompatible constraints, claims, states, or declarations that cannot be simultaneously satisfied.

## Secondary Lenses

- LEN-0140 — Compression Lens
  - URL: /workbench/lenses/compression-lens/
  - Summary: Reduces structural graphs into stable minimal representations for comparison, redundancy detection, and diffing.

## Primary Issue Matches

- ISS-0027 — Duplicate Fields With Same Meaning
  - URL: /workbench/issues/duplicate-fields-with-same-meaning/
  - Summary: The AI returns multiple fields, labels, sections, or structured elements that carry the same meaning and create ambiguity about which one should be used.
- ISS-0066 — Duplicate Output Sections
  - URL: /workbench/issues/duplicate-output-sections/
  - Summary: The AI repeats sections, headings, blocks, or output areas in a way that creates redundancy, confusion, or downstream handling problems.
- ISS-0070 — Multiple Policies Say the Same Thing
  - URL: /workbench/issues/multiple-policies-say-the-same-thing/
  - Summary: Multiple policies, rules, or guidance documents express the same requirement, creating redundancy and uncertainty about which one governs.
- ISS-0068 — Repeated Constraints Create Confusion
  - URL: /workbench/issues/repeated-constraints-create-confusion/
  - Summary: Repeated constraints, instructions, limits, or exclusions make the task harder to interpret instead of clearer.
- ISS-0067 — Same Rule Declared in Multiple Places
  - URL: /workbench/issues/same-rule-declared-in-multiple-places/
  - Summary: The same rule, constraint, instruction, or policy appears in multiple places, creating redundancy and possible drift.
- ISS-0069 — Same Workflow Check Happens Twice
  - URL: /workbench/issues/same-workflow-check-happens-twice/
  - Summary: The same review, validation, approval, routing, or safety check occurs more than once in the workflow without a clear reason.

## Supporting Issue Matches

- ISS-0056 — Old Output Expectations Survive Migration
  - URL: /workbench/issues/old-output-expectations-survive-migration/
  - Summary: Expectations from a prior model, prompt, schema, tool, or workflow survive a migration and continue shaping review or downstream handling after they should be replaced.
- ISS-0107 — Single Field Carries Too Many Obligations
  - URL: /workbench/issues/single-field-carries-too-many-obligations/
  - Summary: One field, label, score, status, or structured value is expected to carry too many meanings, decisions, or workflow obligations.