PILLAR 4, AUTHORITY NETWORK · 4.1 Structured data validityMediumInferred
Inconsistent vocabularies
Mixing schema vocabularies or using non-standard types confuses parsers. I stick to schema.org consistently.
What it is
Mixing schema.org with others inconsistently.
Why it matters
Parsing ambiguity.
How to fix it
Standardise on schema.org JSON-LD.
How to find it on your site
- Review the markup for mixed or non-standard vocabularies.
- Standardise on schema.org types and properties.
- Remove non-standard extensions.
- Re-validate.
Cross-reference to ranking and citation factors
Consistent, standard vocabulary is what parsers reliably understand. Mixing it in risks the markup being ignored.
Impact
Low-medium. Inferred.
Evidence
Use supported vocabulary consistently. Google Search Central, Structured data general guidelines