certificationIdentification
Identifier of a certification instance (as registered with an independent certification body). Typically this identifier can be used to consult and verify the certification instance. See also gs1:certificationIdentification.
Definition from the Schema.org vocabulary (English).
Estimated domains
10K - 100K rising
Trend over time
Domain tier in each available month.
Usage in Google Search
Documented Google contexts where this property is required or recommended for rich results.
- Recommendedmerchant-listing
Text The code of the certification. For example, for the EPREL certificate with the link https://example.com/product/dishwashers2019/123456 the code is 123456. The code is required for European Energy Labels. If you're a merchant serving customers in NO, CH, or the UK and you don't have EPREL codes, you can use the certificationRating property instead of the certificationIdentification property.
Used on types
Tiers indicate the number of unique domains using the term. They are intentionally approximate to reduce noise and protect site privacy. How to read the data.