{
  "schema": { "name": "expense.canonical", "version": "1.1.0" },
  "workflow_id": "WF-2026-0042",
  "employee_id": "EMP-12345",
  "trip": {
    "start_date": "2026-10-01",
    "end_date":   "2026-10-03",
    "destination": "Berlin",
    "purpose": "Kundentermin"
  },
  "currency": "EUR",
  "total_amount": "428.50",
  "project_assignment": {
    "project_code": "P-42",
    "cost_center": "CC-100",
    "source_attestation_ref": "sha256:0000000000000000000000000000000000000000000000000000000000000001"
  },
  "expense_items": [
    { "type": "HOTEL", "amount": "328.50", "incurred_on": "2026-10-01" },
    { "type": "MEALS", "amount": "100.00", "incurred_on": "2026-10-02" }
  ]
}