SAP S/4HANA MM (Materials Management) is the module interior SAP's S/4HANA ERP suite that manages an company's procurement and inventory operations. In clean phrases, it is the tool that governs how a industrial employer business enterprise buys materials, gets them, shops them, and will pay for them. https://www.proexcellency.com/blogs/sap-online-training/sap-s4hana-mm-complete-guide-procurement-inventory