{
  "$schema": "https://aigovernanceengineer.com/schemas/decommissioning-runbook.v1.json",
  "runbook_id": "rb-retire-credit-afford-02",
  "subject": "credit-afford-02@2.4.1",
  "reason": "replaced",
  "replaced_by": "credit-afford-03",
  "decision_ref": "gng-credit-afford-03-3.2.0",
  "dependencies": [
    "loan origination system scoring call",
    "monthly credit risk report"
  ],
  "notifications": [
    {
      "party": "users",
      "method": "Release note to credit analysts",
      "sent_at": "2026-09-14"
    },
    {
      "party": "deployers",
      "method": "Change notice to the PT branch network",
      "sent_at": "2026-09-14"
    }
  ],
  "steps": [
    {
      "step_id": "S1",
      "action": "disable_traffic",
      "detail": "Remove 2.4.1 from the scoring router after 03 reaches 100%.",
      "owner": "credit-data-engineering",
      "status": "done",
      "completed_at": "2026-09-21T08:00:00Z",
      "evidence": "https://evidence.example.org/changes/chg-4410"
    },
    {
      "step_id": "S2",
      "action": "revoke_credentials",
      "detail": "Revoke the service account and database grants.",
      "owner": "platform-identity",
      "status": "done",
      "completed_at": "2026-09-21T09:30:00Z"
    },
    {
      "step_id": "S3",
      "action": "retire_register_entry",
      "detail": "Set lifecycle_stage to retired; keep the entry.",
      "owner": "ai-governance-lead",
      "status": "done",
      "completed_at": "2026-09-21T10:00:00Z"
    },
    {
      "step_id": "S4",
      "action": "archive_evidence",
      "detail": "Archive technical documentation, test reports and logs.",
      "owner": "model-risk",
      "status": "done",
      "completed_at": "2026-09-22T12:00:00Z"
    },
    {
      "step_id": "S5",
      "action": "delete_model_artefacts",
      "detail": "Delete weights from the serving registry; keep one sealed copy with the archive.",
      "owner": "credit-data-engineering",
      "status": "pending"
    }
  ],
  "data_disposition": [
    {
      "dataset": "scoring logs 2023-2026",
      "action": "retain",
      "basis": "credit file retention and audit",
      "until": "2036-09-21"
    },
    {
      "dataset": "feature cache",
      "action": "delete"
    }
  ],
  "evidence_archive": {
    "location": "https://archive.example.org/ai/credit-afford-02",
    "retain_until": "2033-06-30"
  },
  "rollback_possible_until": "2026-10-21",
  "status": "in_progress"
}