Reseller negotiated his own agreement with the Service Provider (domain registrator, SSL certificate provider). Provider wants to invoice this reseller for using provisioning system depending on total subscriptions amount or any other conditions.
Business Automation does not have the functionality to bill resellers for subscriptions based on their own service plans.
Feature Request #PBA-78095 was submitted to developers to implement such behaviour in the future versions of our product. Contact your Technical Account Manager or Pooled Technical Associate at email@example.com in order to clarify the status of this #PBA-78095.