Review Schema

⚠ Note: In the past, an entity like a business or an organization could add review markup about themselves to pages on their website. with the goal of having review stars show up in Google’s SERPs. That markup could have been added directly by the entity or embedded through the use of a third-party widget.

As of September 2019, Google will no longer display rich review snippets for “self-serving” reviews for businesses and organizations (the LocalBusiness and Organization schema types).

Google considers reviews as “self-serving” if the entity itself has chosen to add the markup to its own pages, about its own business or organization.

Do you need to remove self-serving reviews from LocalBusiness or Organization? No, you don’t need to remove them. Google Search just won’t display review snippets for those pages anymore.

Reference: https://webmasters.googleblog.com/2019/09/making-review-rich-results-more-helpful.html