Normal Billing run is a billing mechanism which is used in cases where customers start using the services that were subscribed to or delivered to them, and by the end of their billing frequency period they are charged for those services. Normal billing run can manage both pre – billed and post-billed services. Pre Bill Services are services which should be billed in advance, before they have been used, either period based or anniversary based. Post Bill Services are services which should be billed after they have been used.to bill customers, for Services they have bought or are subscribed to, before or after they start using them, and for Physical Goods they have bought. Normal Billing is handled by the execution of Normal Billing Runs.