{
    "type": "breaking_change",
    "message": "Made the application request serializers polymorphic.",
    "issue_number": null,
    "bullet_points": [
      "Breaking change: when an application is created or updated via the API with an invalid `type` we will now return an `ERROR_APPLICATION_TYPE_DOES_NOT_EXIST` error code, rather than `ERROR_REQUEST_BODY_VALIDATION`."
    ],
    "created_at": "2024-03-15"
}