Billing Definition
- Processing Source Transactions represented by Billable Items (BIT).
- Selection, Grouping and Aggregation into Billing Documents.
- Execution Individually or via Mass Run.
- Posting Billing Document.
- Source for Invoicing Execution.
The billing process groups billable items into billing documents. The usage-based billable items have previously been uploaded from rating systems such as SAP Subscription Billing. The recurring- and one-time charged-based billable items have previously been requested from a billing plan.
The billing process underlies preconfigured and adoptable rules for selecting, grouping and aggregation of billable items for a well structured billing document.
The billing process generates billing documents that are source documents for invoicing.
The billing process can be executed either for one business partner or as a mass run.

Billing creates documents according to selecting, grouping and aggregation rules for billable items.
Billing processes only billable items that are ready to be billed according to their billing date.
Billable Items that are not billed can be selected for exception processing.

The billing execution results in the creation of billing documents. Billing can be executed either individually for one business partner or in a mass run for a large number of business partners and billable items.
The billing mass run uses the mass processing function of Contract Accounting to reduce processing time. You can use analytical SAP Fiori Apps to analyze raw data and billable items in preparation for billing processing.

The SAP Fiori App Billing Individual Processing periodically aggregates billable items and generates billing documents. This step can be executed either manually or scheduled in a mass run.

The SAP Fiori App Billing Document Display allows the agent to display detailed data resulting from the aggregation of billable items and the enrichment, for example, of tax item data. In the billable items tab, all billable items aggregated in this particular billing document are itemized.
The billing document consists of the following elements:
- Billing Document Header
- Billing Document Items
- Billable Items
- Source Items
- Tax Items
- Master Data
- Reversal Data