How it works
Schema markup expresses entities and relationships using a defined vocabulary. Its properties should describe facts visible on the page or confirmed for the relevant entity. Choosing the right type is more important than adding every available property.
A realistic example
A glossary term can describe a DefinedTerm with a name and explanation. It should not fabricate product offers or customer ratings to qualify for a different result format. A location page also should not invent a local branch address where no office exists.
What to check
Compare each property with visible content and verified business information. Check identifiers, URLs, language and duplicate markup. Validate syntax and vocabulary, then separately check whether the search feature supports that type and whether its additional requirements are met.
Limits and next steps
Valid schema is not a guarantee of rich results or ranking. Maintain it with the underlying content and use one responsible generator. Avoid adding commercial FAQ markup solely in expectation of a Google rich-result benefit.