# propertyID

A commonly used identifier for the characteristic represented by the property, e.g. a manufacturer or a standard code for a property. propertyID can be (1) a prefixed string, mainly meant to be used with standards for product properties; (2) a site-specific, non-prefixed string (e.g. the primary key of the property or the vendor-specific ID of the property), or (3) a URL indicating the type of the property, either pointing to an external vocabulary, or a Web resource that describes the property (e.g. a glossary entry). Standards bodies should promote a standard prefix for the identifiers of properties from their standards.

## Expected Types

| Type | Description |
|------|-------------|
| [Text](https://schema.org.ai/Text) | Data type: Text. |
| [URL](https://schema.org.ai/URL) | Data type: URL. |

## Used on Types

| Type | Description |
|------|-------------|
| [PropertyValue](https://schema.org.ai/PropertyValue) | A property-value pair, e.g. representing a feature of a product or place. Use the 'name' property for the name of the property. If there is an additional human-readable version of the value, put that into the 'description' property. Always use specific schema.org properties when a) they exist and b) you can populate them. Using PropertyValue as a substitute will typically not trigger the same effect as using the original, specific property. |

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