I need to create some Add-Ons of type "Subscription" for my UWP product in the Microsoft Store. I have seen several API that are used to manage the subscription (e.g. https://docs.microsoft.com/en-us/windows/uwp/monetize/change-the-billing-state-of-a-subscription-for-a-user and https://docs.microsoft.com/en-us/windows/uwp/monetize/get-subscriptions-for-a-user) but nothing so far to create a new subscription.
Moreover, there is an API to create Add-Ons, but only for types "Durable" and "Consumable" (https://docs.microsoft.com/en-us/windows/uwp/monetize/create-an-add-on).
Are you aware of any API to create a Subscription?