How to fix it
- Check whether your review app emits aggregateRating on the product page, and enable it if it is optional.
- Do not hand-write ratings that are not backed by real reviews. This is both a policy violation and easy to detect.
Why an agent cares
Most review apps inject star ratings into the page visually, and many also emit aggregateRating in structured data. Some do not, or do it only on themes they support.
When an agent is asked for the best option rather than the cheapest, rating is the field it reaches for. If yours is not machine-readable, you are compared on price alone.
Check your own store
This check runs as part of a full audit, alongside 18 others. Nothing to install.
Other structure checks
Missing Product structured dataWithout Product or ProductGroup JSON-LD, price and stock have to be inferred from your layout rather than read.No GTIN, MPN or brandIdentifiers are how an agent works out that your listing and a competitor's are the same physical product.Price or availability missing from structured dataA Product block with no complete offer tells an agent the page exists but not whether it can be bought.