{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api-evangelist.github.io/project44/json-schema/project44-shipment-schema.json",
  "title": "project44 Shipment",
  "description": "Schema for a project44 multimodal freight shipment with tracking and visibility data.",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid",
      "description": "project44 internal shipment UUID"
    },
    "masterShipmentId": {
      "type": "string",
      "description": "Unique master shipment identifier across modes"
    },
    "mode": {
      "type": "string",
      "enum": ["TL", "LTL", "OCEAN", "AIR", "RAIL", "PARCEL", "DRAY"],
      "description": "Transportation mode"
    },
    "status": {
      "type": "string",
      "enum": ["AT_STOP", "IN_TRANSIT", "COMPLETED", "EXCEPTION", "UNKNOWN"],
      "description": "Current lifecycle status"
    },
    "carrierCode": {
      "type": "string",
      "description": "Carrier SCAC code"
    },
    "carrierName": {
      "type": "string"
    },
    "proNumber": {
      "type": "string",
      "description": "Carrier PRO/tracking number"
    },
    "bolNumber": {
      "type": "string",
      "description": "Bill of lading number"
    },
    "poNumber": {
      "type": "string",
      "description": "Purchase order number"
    },
    "origin": {
      "$ref": "#/$defs/ShipmentStop"
    },
    "destination": {
      "$ref": "#/$defs/ShipmentStop"
    },
    "estimatedDelivery": {
      "$ref": "#/$defs/ETAWindow"
    },
    "currentPosition": {
      "$ref": "#/$defs/Position"
    },
    "exceptions": {
      "type": "array",
      "items": {
        "$ref": "#/$defs/ShipmentException"
      }
    },
    "createDatetime": {
      "type": "string",
      "format": "date-time"
    },
    "lastUpdateDatetime": {
      "type": "string",
      "format": "date-time"
    }
  },
  "required": ["id", "mode", "status", "carrierCode"],
  "$defs": {
    "ShipmentStop": {
      "type": "object",
      "properties": {
        "stopNumber": { "type": "integer" },
        "stopType": { "type": "string", "enum": ["ORIGIN", "DESTINATION", "INTERMEDIATE"] },
        "name": { "type": "string" },
        "city": { "type": "string" },
        "state": { "type": "string" },
        "postalCode": { "type": "string" },
        "country": { "type": "string", "maxLength": 3 },
        "latitude": { "type": "number", "format": "double" },
        "longitude": { "type": "number", "format": "double" },
        "actualArrival": { "type": ["string", "null"], "format": "date-time" },
        "actualDeparture": { "type": ["string", "null"], "format": "date-time" }
      }
    },
    "ETAWindow": {
      "type": "object",
      "properties": {
        "estimatedAt": { "type": "string", "format": "date-time" },
        "confidenceLow": { "type": "string", "format": "date-time" },
        "confidenceHigh": { "type": "string", "format": "date-time" },
        "predictedOnTime": { "type": "boolean" },
        "predictedLateMinutes": { "type": ["integer", "null"] }
      }
    },
    "Position": {
      "type": "object",
      "properties": {
        "timestamp": { "type": "string", "format": "date-time" },
        "latitude": { "type": "number", "format": "double" },
        "longitude": { "type": "number", "format": "double" },
        "heading": { "type": ["number", "null"], "format": "double" },
        "speed": { "type": ["number", "null"], "format": "double" },
        "speedUnit": { "type": "string", "enum": ["MPH", "KPH"] }
      },
      "required": ["timestamp", "latitude", "longitude"]
    },
    "ShipmentException": {
      "type": "object",
      "properties": {
        "exceptionCode": { "type": "string" },
        "description": { "type": "string" },
        "severity": { "type": "string", "enum": ["LOW", "MEDIUM", "HIGH", "CRITICAL"] },
        "timestamp": { "type": "string", "format": "date-time" },
        "resolvedAt": { "type": ["string", "null"], "format": "date-time" }
      }
    }
  },
  "examples": [
    {
      "id": "f7a3b2c1-1234-5678-abcd-ef0123456789",
      "masterShipmentId": "MSI-TL-2026031800001",
      "mode": "TL",
      "status": "IN_TRANSIT",
      "carrierCode": "ODFL",
      "carrierName": "Old Dominion Freight Line",
      "proNumber": "ODFL-58712346",
      "bolNumber": "BOL-202603180001",
      "origin": {
        "stopNumber": 1,
        "stopType": "ORIGIN",
        "city": "Chicago",
        "state": "IL",
        "postalCode": "60608",
        "country": "USA"
      },
      "destination": {
        "stopNumber": 2,
        "stopType": "DESTINATION",
        "city": "Atlanta",
        "state": "GA",
        "postalCode": "30303",
        "country": "USA"
      },
      "estimatedDelivery": {
        "estimatedAt": "2026-03-20T14:00:00Z",
        "confidenceLow": "2026-03-20T12:00:00Z",
        "confidenceHigh": "2026-03-20T17:00:00Z",
        "predictedOnTime": true
      }
    }
  ]
}