{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "format": {
      "default": "PDF",
      "type": "string",
      "enum": [
        "ZPL",
        "PDF",
        "PNG"
      ]
    },
    "packageId": {
      "type": "string",
      "pattern": "^pkg_[0-9A-HJKMNP-TV-Z]{26}$"
    }
  },
  "additionalProperties": false
}