identifier

The identifier property represents any kind of identifier for any kind of [[Thing]], such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See [background notes](/docs/datamodel.html#identifierBg) for more details.

Comment
The identifier property represents any kind of identifier for any kind of [[Thing]], such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See [background notes](/docs/datamodel.html#identifierBg) for more details.
DomainIncludes
Thing
EquivalentProperty
Identifier
Label
identifier
RangeIncludes
PropertyValue
Text
URL

productID

The product identifier, such as ISBN. For example: ``` meta itemprop="productID" content="isbn:123-456-789" ```.

Comment
The product identifier, such as ISBN. For example: ``` meta itemprop="productID" content="isbn:123-456-789" ```.
DomainIncludes
Product
Label
productID
RangeIncludes
Text
SubPropertyOf
identifier