Scope

View unbilled charges at the subscription level

Detailed view of unbilled charges at the customer level.

API call to view unbilled charges. 

Solution

You can view all unbilled charges for a particular customer or for a particular subscription

Subscription Level

All unbilled charges for a subscription are listed on its details page:

The section also shows the date on which the charges would be invoiced (same as the subscription renewal date).

Customer Level

All unbilled charges for a customer (across all subscriptions under it) are listed on its details page.

API 

If you'd like to view the details of any changes that Chargebee makes to the list of unbilled charges, you can use the List unbilled charges API call. The is_voided parameter is set as true for unbilled charges that have been invoiced already. For such charges, voided_at parameter is also available.