{
  "request_id": "req_readiness_invalid_0001",
  "responded_at": "2026-09-23T14:00:00.075Z",
  "http_status": 422,
  "classification": "synthetic_non_customer_fixture",
  "body": {
    "ready": false,
    "errors": [
      {
        "code": "MAXDIFF_ITEMS_PER_TASK_EXCEEDS_ITEM_COUNT",
        "path": "survey.items_per_task",
        "message": "items_per_task must not exceed the number of items."
      },
      {
        "code": "MAXDIFF_INSUFFICIENT_ITEMS",
        "path": "survey.items",
        "message": "At least four items are required for this fixture contract."
      }
    ]
  }
}