{
  "id": "C001",
  "synthetic": true,
  "checked_at": "2026-10-24",
  "input": {
    "serial": true,
    "trace": [
      {
        "business": "b1",
        "id": "b1",
        "parent": null,
        "kind": "business",
        "seq": 0
      },
      {
        "business": "b1",
        "id": "s1",
        "parent": "b1",
        "kind": "sdk",
        "seq": 1
      },
      {
        "business": "b1",
        "id": "u1",
        "parent": "s1",
        "kind": "upstream",
        "seq": 2,
        "outcome": "failed"
      },
      {
        "business": "b1",
        "id": "u2",
        "parent": "s1",
        "kind": "upstream",
        "seq": 3,
        "outcome": "success"
      }
    ],
    "negative_cases": [
      "duplicate",
      "missing-parent",
      "cross-business",
      "after-success"
    ],
    "expected": {
      "dispatches": 2,
      "rejected": [
        "duplicate",
        "missing-parent",
        "cross-business",
        "after-success"
      ]
    }
  }
}