Here are some of the important transaction codes (tcodes) for the MM Module.
CS03 Display Material BOM
MB21 Create Reservation
MB25 Reservation List
MB51 Material Doc. List (Untuk Lihat All Transaksi MM)
MB52 List of Warehouse Stocks on Hand
MD03 Individual Planning-Single Level
MD04 Display Stock/Requirements Situation
ME01 Maintain Source List
ME11 Create Purchasing Info Record
ME21N Create Purchase Order
ME22N Change Purchase Order
ME23N Display Purchase Order
ME29N Release purchase order
ME2N Purchase Orders by PO Number
ME2O SC Stock [...]