Error Extended

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Error Extended",
  "description": "Error payload with the invalid parameter reference.",
  "allOf": [
    {
      "$ref": "#/components/schemas/Error"
    },
    {
      "type": "object",
      "properties": {
        "param": {
          "description": "Parameter name (with relative location) to which the error applies. Parameters from embedded resources are displayed using dot notation. For example, `card.name` refers to the `name` parameter embedded in the `card` object.",
          "type": "string"
        }
      }
    }
  ]
}