Oh, and for the love of all things holy, NEVER do ANYTHING in real-time... Schedules are your friend... Every system driven action in a billing system should be

Oh, and for the love of all things holy, NEVER do ANYTHING in real-time... Schedules are your friend... Every system driven action in a billing system should be run off a configurable schedule, not done in response to actions (except updating customer entitlements)... You'll thank me later when you encounter dunning, invoicing terms, etc. P.s But you'll hate me when you encounter pro-rating...