Why Valid Structured Data Isn't Enough for Google Rich Results
I spent hours adding schema.org markup to dozens of pages. Validated everything — every page passed with flying colors. Then I tested with Google's Rich Results Test. Nothing. No errors, no warnings. Just "Not eligible for rich results."
That's when it hit me: schema.org validity and Google's eligibility for rich results are two completely different things. Passing the schema.org validator is like passing a spell-check — it confirms your syntax is correct, but says nothing about whether Google will actually use it.
The Gap: Valid ≠ Eligible
Schema.org defines hundreds of types and properties. Google only supports a subset — and for each supported type, there are specific required fields that must be present for rich results to appear. Without them, your markup is invisible to Google's enhanced listings.
FAQ Schema: The Missing Answer
This is the most common mistake. Compare these two snippets — one earns rich results, one doesn't:
Product Schema: More Than Just a Name
Quiz: Will This Schema Earn Rich Results?
Test your understanding — look at each snippet and decide before revealing the answer:
itemReviewed — Google needs to know what's being reviewed. A review without a subject is meaningless for rich results.
Question and acceptedAnswer with text. All required fields are present. Note: since August 2023, Google only shows FAQ rich results for government and health sites — but the schema still matters for AI search engines.
availability in offers and aggregateRating means you won't get star ratings or "In Stock" badges. You'll get a minimal rich result at best.
Interactive Validator
Toggle fields on and off to see which combinations pass Google's Rich Results requirements:
The Two-Step Validation Process
Most developers only use step one and wonder why nothing shows up in search. You need both:
Step 1: Schema.org Validator
Confirms syntax is correct. Catches typos, nesting errors, and type mismatches. Use during development.
Step 2: Google Rich Results Test
Checks if your markup meets Google's eligibility criteria. Highlights missing required fields. Use before shipping.
What I Learned the Hard Way
Structured data isn't a one-time implementation. It's an ongoing technical SEO discipline. Google updates their eligibility criteria regularly, and what worked last quarter might not work today.
The biggest shift I've seen: while Google deprioritized FAQ rich results in August 2023 (restricting them to government and health sites), AI search engines like ChatGPT Search, Perplexity, and Google AI Overviews actively consume FAQ structured data to decide which brands to cite. Pages with well-structured FAQ content see significantly higher citation rates in AI-generated answers.
So even if Google's traditional search results don't display your FAQ schema as a rich result, that same schema is being read by AI systems. The lesson: don't strip out structured data just because one consumer stopped using it. The audience for your markup is growing, not shrinking.
By Pardeep Dhingra