Can SSL subscription be created from PCC?
According to OBAS business rules, Provider cannot bill himself. That means that each subscription that is billed for (unlike Virtuozzo Containers that Provider can create for himself on his own nodes) must belong to a customer.
Thus, you cannot create SSL subscriptions from PCC (Provider Control Center). The only way to create an SSL subscription is to log in to Customer Panel and press Buy SSL certificate.
As a Provider, you can log in to CP, press Buy SSL certificate and create an SSL subscription but that will actually address a certificate authority and create a certificate the customer will pay for.