{
  "$id": "http://itb.ec.europa.eu/sample/PurchaseOrder-large.schema.json",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "description": "Business rules for large EU Purchase Orders expressed in JSON",
  "type": "object",
  "required": [ "items" ],
  "properties": {
    "items": {
      "type": "array",
      "items": {
        "type": "object"
      },
      "minItems": 10
    }
  }
}