A Schema.org Property
A pointer to another, somehow related product (or multiple products).
Values expected to be one of these types
GoodRelations Vocabulary Terms
This term uses
terminology from the GoodRelations Vocabulary for E-Commerce, created by Martin Hepp. GoodRelations is a data model for sharing e-commerce data on the Web. More information about GoodRelations can be found at http://purl.org/goodrelations/