assignProductInstanceToSite( )

Assigns a product instance to a site.

You must pass the ID of the Wix account that the product instance belongs to in the header of the call.

The customer immediately gains access to features included in the assigned service. It's up to the reseller to decide whether assigning a product instance affects the customer’s payment.

It's possible to assign a product instance that's already assigned to a site, to a different site without unassigning it first. But if the call fails in such a situation, the product instance may either remain assigned to the original site or become unassigned. You can confirm the instance's status by retrieving the relevant package.