This document provides an overview of SAP's Customer Service (CS) module, which supports service order processing, service contract management, warranty processing, and more. Key areas covered include master data, technical objects, service notification and order processing, service planning, service scenarios, and an information system for notification and breakdown analysis. The CS module integrates with other SAP modules like PM, FI-AA, CO, MM, and SD to manage assets, costs, materials, sales orders, and more over the full service lifecycle.