PILLAR 4, AUTHORITY NETWORK · 4.1 Structured data validityMediumInferred
Unstable/duplicate @id
The @id ties structured-data entities together across pages. Unstable or duplicated @ids break those connections and can merge or split entities wrongly.
What it is
Entity @id not stable/unique.
Why it matters
Weakens entity linking across pages/sources.
How to fix it
Use stable, unique @id values.
How to find it on your site
- Review the @id values across your structured data.
- Check they are stable, unique URLs per entity.
- Fix duplicates and ensure each entity has a consistent @id.
- Re-validate the entity graph.
Cross-reference to ranking and citation factors
Stable @ids let Google connect entities correctly across the site. Broken ones fragment or conflate them.
Impact
Low-medium for entities. Inferred.
Evidence
Stable identifiers aid entity understanding. Google Search Central, Structured data general guidelines