Inventory partner domain
This solution covers inventory sharing relationships, where different entities (app/site owner, content owner) may have the right to sell ad space within a piece of content on a given app/site.
Gamoshi supports the Inventory partner domain through a new mapping rule for demand partners.
The field value is usually a domain, and its mapped against bundles.
When a site or an app contains ad inventory that is owned by another partner, the app or site should list all domains for those partners by using the mapping rule TO property:
“Inventory Partner Domain”.
You can use the mapping rule for a scenario where publisher A has ownership of (and rights to sell) some inventory on app or site B.
For more detailed information, refer to the IAB documentation at: IAB - Inventory Partner Domain