Get all available product offerings an existing add-on can be changed to and when the change can take effect.
When the add-on can be changed typically depends on the network setup, billing cycle, and current add-on product offering. As a rule of thumb (though not always), upgrades and lateral moves are immediate, while downgrades take effect at the next renewal date.
An API key that grants access to the Connect API. You can create and manage API keys in the portal.
The unique identifier of the subscription.
The current add-on product offering to get change options for.
Available change options for the add-on.