unitCode
The unit of measurement given using the UN/CEFACT Common Code (3 characters) or a URL. Other codes than the UN/CEFACT Common Code may be used with a prefix followed by a colon.
Definition from the Schema.org vocabulary (English).
Estimated domains
1M - 10M stable
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.
- Requiredmerchant-listing
Text or URL The unit of measurement. Either the UN/CEFACT codes or their human-readable equivalents as listed in Google Merchant Center Help Unit pricing measure are supported (except sheet and item; these two codes are only supported by Merchant Center feeds).
- Recommendedshipping-policy
Text The units of the minimum/maximum values. The value must be DAY or d.
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.