Plans

It can also be the parent plan of any number of supplemental (child) plans, or it can be a standalone plan that does not contain any supplemental plans. An account must have at least one Master Plan Instance assigned to it and a Master Plan Instance can be purchased multiple times.

A Supplemental Plan is an optional plan offering associated with a Master Plan that can be purchased in combination with its parent Master Plan. Supplemental Plans provide the ability to add a variety of additional services that are not offered in a Master Plan. Any number of Supplemental Plans can be associated to a Master Plan. And a customer can purchase any number of Master Plans and Supplemental Plans, even the same Plan offerings.

In this example, a customer purchased the “Mobile Phone” Master Plan and two child Supplemental Plans: “Data Plan” and “SMS Test Plan”. Once a customer purchases a Master Plan and any Supplemental Plans, the Master Plan is considered a Master Plan Instance on the account, and the full set of plans is known as a "stack." An account can have multiple Master Plan Instances.