doc-chg Purpose Author a Change Management (CHG) record — the governance overlay for modifying existing SDD artifacts. CHG is NOT a lifecycle layer : it has no layer number, no place in the BRD→IPLAN→Code template chain, and no readiness score. It triggers on-demand whenever an existing artifact must change, and it uses gate approval (not a numeric score) as its quality bar. Cross-layer scope : a CHG can touch any artifact along . Its job is to classify the change, route it to the correct gate, trace the cascade, and keep the change registry honest. When to Use Use when: - An existing artifac…