Review schema describes visible reviews or ratings for an eligible item; structured data does not create ratings or guarantee a rich result.
What Review Schema means
Review markup represents visible review content for a specific item. It is not a way to manufacture stars, and a valid graph does not guarantee that Google will show a rich result.
A practical inspection workflow
For LocalBusiness and Organization, self-controlled reviews are not eligible for the relevant rich-result treatment. Product reviews have different eligibility conditions; always match markup to visible review content and the feature documentation.
What to verify
Validate the markup, inspect the rendered review evidence, and monitor Search Console’s review snippet reporting where available.
Limits and common mistakes
Create a review-evidence checklist before markup: the item reviewed, visible rating scale, reviewer identity, review text, publication context, and any incentive disclosure. Check the rendered page first, then its JSON-LD. If the content cannot be shown transparently to a visitor, it is not suitable material for review markup. This protects users and avoids treating structured data as a cosmetic layer that can outrun the underlying product or service evidence.