Source: Schema.org v30.1 vocabulary. Official includesObject property definition.
What does includesObject mean?
This links to a node or nodes indicating the exact quantity of the products included in an [[Offer]] or [[ProductCollection]].
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status