Sources other than `parameter` and `pointer`

1

Has there been any discussion about extending the standard to support additional properties under the source property of an error object? In particular:

  1. In some cases an error is associated with a particular header (Accept, Content-Type, or Authorization for example). I could see the usefulness of an error like:
    {
      "id": "…",
      "status": "406",
      "code": "Not Acceptable",
      "title": "The request expects a media type that is not available",
      "detail": "You requested image/jpeg but we only support application/vnd.api+json"
      "source": {
        "header": "Accept"
      }
    }
  1. Maybe (not sure) there’s value in pinpointing the error in the path, eg:
    {
      "id": "…",
      "status": "404",
      "code": "Not Found",
      "title": "The requested resource does not exist",
      "detail": "There is no resource of type 'foo' with id '1234'"
      "source": {
        "path": "/v1/foo/1234"
      }
    }