You can create account assignments for an employee in SAP SuccessFactors for a business unit and a department. A business unit is an organizational unit that represents a subdivision of a company that operates in a specific market or region or provides a specific product or service. A department is an organizational unit that represents a functional area or a group of employees within a business unit that share common tasks or responsibilities. You can use SAP SuccessFactors Employee Central to maintain the organizational structure and assign employees to different organizational units.