If you are using Schema.org, you can add extra properties, in addition to All those required via the guidelines unorunor 97k2828 gold badges226226 silver badges381381 bronze badges 7 No kidding! Will look this more than. Why on earth would they publish this months in the past without full support. I https://myeasybookmarks.com/story5011077/5-essential-elements-for-model-json-schema