In SAP S/4HANA, Customer Master Data is no longer maintained as a standalone object like in ECC. It is managed through the Business Partner (BP) concept, which unifies customer, vendor, and other master data into a single, simplified model.

SAP S/4HANA Sales is the Sales and Distribution (SD) module built on SAP S/4HANA. It supports the complete sales lifecycle (Order to Cash) including: Customer inquiry and quotation Sales order processing Delivery and goods issue Billing and revenue recognition Credit and risk management