Billing 
Billing
Use
Generally, billing represents the completion of a business transaction. You create debit memos in which you bill the customer for costs that have arisen as a result of services that have been performed or materials that have been used. Bills can also be created periodically (for example, monthly). In this case, a business transaction has not necessarily been completed when billing is performed.
Features
You have various options for billing services or materials.
Billing Actual Costs
For more information, see Periodic Billing.
Prices for customer-specific services can be stored in the R/3 System as fixed prices. In the case of a standard service (for example, car inspection every 10,000 km), the fixed price can be stored in a service product or in a configurable service product.
The prices for some customer-specific services (for example, make-to-order production, external maintenance in service business, or specific services such as consulting) are billed using resource-related billing. The customer is charged for individual materials, internal company services and costs in the billing document.
Two different types can be distinguished in the case of resource-related billing:
Billing Planned Costs
The customer has received a quotation. You bill the customer for the delivery of materials or for performing a service using flat rate billing, according to the prices stipulated in the quotation.
The customer has received a cost proposal. You bill the customer for the delivery of materials or for performing a service using resource-related billing, and not according to the prices stipulated in the quotation.
For more information on quotations, see Quotation Creation and Sales Pricing.