This documentation describes which Attributes are required, advised, or optional for structured knowledge with special intending to Google Lookup. Most Search structured data uses schema.org vocabulary, but you should depend on the Google Search Central documentation as definitive for Google Research behavior, in lieu of the schema. You should use https://allkindsofsocial.com/story3955125/the-fact-about-opencart-framework-that-no-one-is-suggesting