When a subscription is canceled, all queued orders that have shipping dates in the future get canceled automatically. Since Chargebee does not readily support delivery-based proration, choose Don't issue credits for the unused period while canceling the subscription. Then, do one of the following:
- Use the refund order action against each unfulfilled order, choosing the maximum refundable amount that is pre-filled in the dialog. OR
- Create a credit note for the invoice associated with the orders, for the amount equal to the total value of the unfulfilled orders. Choose the reason code as Order cancellation to ensure that the refundable credits are associated with the orders that were canceled.