There is an entity with property $language:

private Language $language = Language::ES;

On post request data with language from enum list (e.g. es) all is ok. But if value out of list response error (e.g. 00):

{
    "title": "An error occurred",
    "detail": "The data must belong to a backed enumeration of type App\\Core\\Language",
    "status": 400,
    "type": "/errors/400"
}

Choice and custom validator useless because they execute AFTER deserialization where that error appears. So i need proper 422 error response. What and how to fix?