{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://retail.example/schemas/physical-retail-3.json",
  "title": "Physical retail attributes",
  "description": "Retailer-defined attributes for a purchasable physical-good variant.",
  "type": "object",
  "required": [
    "sku",
    "brand",
    "color",
    "capacity_ml",
    "tax_classification",
    "inventory",
    "fulfillment"
  ],
  "additionalProperties": false,
  "properties": {
    "sku": {
      "type": "string",
      "title": "Stock keeping unit"
    },
    "brand": {
      "type": "string",
      "title": "Brand"
    },
    "color": {
      "type": "string",
      "title": "Color"
    },
    "capacity_ml": {
      "type": "integer",
      "minimum": 1,
      "title": "Capacity",
      "x-odp-unit": {
        "code": "mL"
      },
      "x-odp-comparison": "numeric"
    },
    "tax_classification": {
      "type": "string",
      "title": "Service tax classification",
      "description": "A Service-defined classification used when requesting a final quote."
    },
    "inventory": {
      "$ref": "#/$defs/inventory"
    },
    "fulfillment": {
      "$ref": "#/$defs/fulfillment"
    }
  },
  "$defs": {
    "inventory": {
      "type": "object",
      "title": "Regional inventory snapshot",
      "required": [
        "region",
        "status",
        "observed_at"
      ],
      "additionalProperties": false,
      "properties": {
        "region": {
          "type": "string",
          "title": "Inventory region"
        },
        "status": {
          "type": "string",
          "title": "Inventory status",
          "enum": [
            "in_stock",
            "limited",
            "out_of_stock"
          ]
        },
        "observed_at": {
          "type": "string",
          "format": "date-time",
          "title": "Observation time"
        }
      }
    },
    "fulfillment": {
      "type": "object",
      "title": "Potential fulfillment methods",
      "required": [
        "shipping_supported",
        "pickup_supported"
      ],
      "additionalProperties": false,
      "properties": {
        "shipping_supported": {
          "type": "boolean",
          "title": "Shipping supported"
        },
        "pickup_supported": {
          "type": "boolean",
          "title": "Pickup supported"
        }
      }
    }
  }
}