# itemPopularity

A measure of the relative popularity or sales rank of the offer within a marketplace, catalog, or platform (e.g. a platform-specific bestseller ranking or sales rank). This property is intended for platform-level or catalog-wide comparative rankings rather than self-asserted promotional claims.

## Expected Types

| Type | Description |
|------|-------------|
| [Number](https://schema.org.ai/Number) | Data type: Number. Usage guidelines: Use values from 0123456789 (Unicode 'DIGIT ZERO' (U+0030) to 'DIGIT NINE' (U+0039)) rather than superficially similar Unicode symbols.; Use '.' (Unicode 'FULL STOP' (U+002E)) rather than ',' to indicate a decimal point. Avoid using these symbols as a readability separator. |
| [QuantitativeValue](https://schema.org.ai/QuantitativeValue) | A point value or interval for product characteristics and other purposes. |

## Used on Types

| Type | Description |
|------|-------------|
| [Offer](https://schema.org.ai/Offer) | An offer to transfer some rights to an item or to provide a service — for example, an offer to sell tickets to an event, to rent the DVD of a movie, to stream a TV show over the internet, to repair a motorcycle, or to loan a book. Note: As the [businessFunction](https://schema.org.ai/businessFunction) property, which identifies the form of offer (e.g. sell, lease, repair, dispose), defaults to [http://purl.org/goodrelations/v1#Sell](http://purl.org/goodrelations/v1#Sell); an Offer without a defined businessFunction value can be assumed to be an offer to sell. For [GTIN](http://www.gs1.org/barcodes/technical/idkeys/gtin)-related fields, see [Check Digit calculator](http://www.gs1.org/barcodes/support/check_digit_calculator) and [validation guide](http://www.gs1us.org/resources/standards/gtin-validation-guide) from [GS1](http://www.gs1.org/). |

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Copied word for word from Schema.org 30.1, https://schema.org/itemPopularity, under CC BY-SA 3.0. Served by the Org.AI Foundation at https://schema.org.ai/itemPopularity.