Renewal Group
After purchasing a prepaid plan product offering, a renewal group is created to manage the recurring renewals of that product. A renewal group defines the renewal cycle, contains the associated renewals, and links them to their corresponding product.
Renewal Group Lifecycle

Renewal Group Termination
A) When the cycle ends, there will be no scheduled renewals, and the renewal group will be terminated.
API Reference
See the full list of endpoints, request and response schemas, examples, and version information in the Renewal Groups section of the API Reference.