SAP MM is one of the modules of SAP that deals with material management and inventory management. ... It deals with the Procurement Process, Master Data (Material & Vendor Master), Account Determination & Valuation of Material, Inventory Management, Invoice Verification, Material Requirement Planning, etc. Materials Management module in SAP consists of several components and sub-components. The most prominent and widely used are Master Data, Purchasing and Inventory.The SAP MM module is fully integrated with other modules in the SAP R/3 system, such as finance (FI), control (CO), sales and distribution (SD), quality management (QM), plant maintenance (PM), planned production (PP) ) And warehouse management  (WM). It supports all stages of material management, material planning and control, purchasing, material purchasing, inventory management and invoice verification.