Declared Subject

Kind: constraint

Layer: Execution Core

Record: architecture:declared-subject

Severity: mandatory

Scope: record, identity

Canonical: Ontology

A rule or precondition that a record carries an allocated id and a declared subject key as two fields, so a moved surface keeps the id, a renamed subject keeps the key, and two records sharing a key are a finding.

Listed in Architecture principles, after Derived Record State and before Write Barrier.

Requires

• Coordination Record

Reinforces

• Stable Identity

Enables

• Rederivation Detection

Violated by

• Location-Derived Identity

Refactored by

• Allocate Identity Once
• Declare the Subject Beside the Id

Severity

• mandatory

Category

• Coordination Surfaces

Linked from

• Coordination Surfaces
• Domain Architecture
• Severity levels

in this codebase

• models/coordination.model.md