Lesson 4 of 5 · Mistakes
Avoid the common mistakes
What it is
Common errors: marking up reviews you didn't collect, missing required fields, invalid JSON and copying another site's markup.
Why it matters
Invalid or misleading markup is ignored or can lead to manual actions.
✓ Good example
Only marking up information visible on the page.
✗ Common mistake
Self-written 5-star aggregate ratings.
You pass when: The Schema Checker shows no errors.
Check it now with our free Schema markup checker.