These are the general guidelines that apply to all structured data. These guidelines must be followed to enable structured data to be eligible for inclusion in Google Search results. Pages or sites that violate these content guidelines may receive less favorable ranking or be marked as ineligible for rich results in Google Search in order to maintain a high-quality search experience for our users. If your page includes structured data or content that is considered spam, you will see a message on your Manual Actions page in Search Console.