// JSON schema for getting an error messages
{
  "$schema": "http://json-schema.org/draft-04/schema#",

  "type": "object",

  "properties": {
    "messages": {
      "type": "array",
      "items": { "$ref": "messages/error.json" },
      "minimumUnits": 1,
      "unique": true
    }
  },

  "additionalProperties": false,
  "required": ["messages"]
}