What this means
The page has JSON-LD schema markup, but it's missing properties that Google requires for rich result eligibility. For example, a Product schema without price or a Recipe schema without cookTime. The JSON field is schema_required.
How to fix
- Review the flagged schema types in your report.
- Check Google's structured data docs for required properties.
- Add the missing required properties.
- Test with Google's Rich Results Test or SEODiff's Entity Schema tool.