Billing Configuration 

To use the billing functions in SAP CRM, you need to complete the activities in Customizing for Customer Relationship Management under Billing.

In particular, you need to make the settings in the following sections and activities:

...

●      Services

You need to configure pricing and partner processing.

●      Number Ranges

●      Define Billing Organizational Unit

●      Define Billing Relevance of Item Categories

For more information on billing scenarios, see Billing Scenarios.

●      Define Billing Types

●      Define Billing Item Categories

●      Item Category Determination

●      If required, Integration ® Transfer of Billing Documents to Accounting