{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/united-states-steel/refs/heads/main/json-structure/steeltrack-shipment-structure.json",
  "name": "Shipment",
  "description": "A shipment record for a steel order.",
  "properties": {
    "shipmentId": {
      "description": "Unique shipment identifier.",
      "example": "SHIP-2025-9876",
      "type": "string"
    },
    "orderId": {
      "description": "Associated order identifier.",
      "example": "ORD-2025-001234",
      "type": "string"
    },
    "purchaseOrder": {
      "description": "Customer purchase order number.",
      "example": "PO-2025-5678",
      "type": "string"
    },
    "shipDate": {
      "description": "Date the order was shipped.",
      "example": "2025-02-14",
      "type": "date"
    },
    "carrier": {
      "description": "Carrier type used for shipment.",
      "enum": [
        "Rail",
        "Truck",
        "Barge",
        "Intermodal"
      ],
      "example": "Rail",
      "type": "string"
    },
    "destination": {
      "description": "Destination city and state.",
      "example": "Detroit, MI",
      "type": "string"
    },
    "weight": {
      "description": "Shipment total weight.",
      "example": 50.0,
      "type": "double"
    },
    "weightUnit": {
      "description": "Weight unit.",
      "example": "tons",
      "type": "string"
    },
    "status": {
      "description": "Shipment delivery status.",
      "enum": [
        "DISPATCHED",
        "IN_TRANSIT",
        "DELIVERED",
        "EXCEPTION"
      ],
      "example": "DELIVERED",
      "type": "string"
    }
  },
  "type": "object"
}