Relevant MM T-Codes

Purchase Order Requisition-ME51N
RFQ to Vendor ----------------- ME41
Raising Quotation ------------- ME47
Comparison of Price ----------ME49
Vendor Evaluation -------------ME61
Creation of PO ------------------ME21N
Goods Receipt with PO ------MIGO
Goods Receipt without PO --MBIC
Invoice Verification -------------MIRO
Goods Issue --------------------- MB1A
Physical Inventory -------------- MI01( Create doc) MI04 (Enter Count) MI07 (Post)