Billing Schema
Definition
The Billing Schema is the central execution framework encompassing all the rates and corresponding logic that can be billed together for an installation. It contains a rigid, step-by-step layout of Variant Programs that direct exactly how measurements should be converted into dollar amounts.
Business Purpose and Architecture
Its business purpose is to provide standard processing guidelines, preventing pricing anomalies by ensuring calculations execute in the correct mathematical order (e.g., applying consumption costs before calculating percentage-based surcharges). Architecturally, the schema orchestrates the execution inside the Universal Billing Engine. It establishes the “Schema Steps,” triggering ABAP functions sequentially, determining proration limits, block constraints, and creating the Final Billing document line items.