1. SAP Help Portal
SAP S/4HANA Cloud: Organizational Structure. "The company code is the central organizational unit of external accounting within the SAP System. You must define at least one company code before you can implement the Financial Accounting component." This document establishes the company code as the fundamental unit for external accounting.
2. SAP Help Portal
SAP S/4HANA: Company Code. "Definition: The smallest organizational unit of Financial Accounting for which a complete
self-contained set of accounts can be drawn up for purposes of external reporting. The process of external reporting involves recording all relevant transactions and generating all supporting documents for financial statements
such as balance sheets and profit and loss statements."
3. SAP Help Portal
SAP S/4HANA: Sales Organization. "Definition: An organizational unit in Logistics that structures the company according to its sales requirements. A sales organization is responsible for selling and distributing goods and services." This source clarifies the role of a Sales Organization as a logistical
not a primary accounting
unit.