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📦 SAP MM – Materials Management Transaction Codes

Comprehensive reference for SAP Materials Management (MM) transaction codes. Covers material master, purchasing, goods receipt, inventory management, invoice verification, and vendor master.

Module: MMSub-Modules: PR · PO · GR · IV · IM · VendorT-Codes: 60+SAP Release: ECC & S/4HANA

Material Master Management

T-Code	Transaction Name	Description & Usage Scenario	Type
MM01	Create Material Master	Create a new material master record by selecting required organizational levels and views. Used when introducing a new raw material, traded good, semi-finished, or finished product.	◉ Master Data
MM02	Change Material Master	Modify any view of an existing material master record including MRP, purchasing, accounting, or sales data. Used to update reorder points, valuation class, purchasing group, or material descriptions.	★ Common
MM03	Display Material Master	View material master data across all views without making changes. Used for reference during order processing, cost estimation, or quality inspection planning.
MM06	Flag Material for Deletion	Set a deletion flag on a material at plant or client level before archiving. Used during material lifecycle management when a material is obsolete and no longer procured.
MMBE	Stock Overview (All Locations)	Display stock quantities for a material across all plants, storage locations, batches, and stock types. Most used stock check transaction. Shows unrestricted, quality inspection, blocked, and transit stock.	★ Common
MB52	Warehouse Stocks Display	Display warehouse stock quantities including special stocks (consignment, project, sales order stock). Used for comprehensive stock position analysis including all special stock categories.	▲ Report
MM60	Materials: Where-Used List	Find all places a material is referenced: BOMs, purchasing info records, contracts, orders. Used before deactivating or changing a material to understand downstream impacts.

Purchasing – Requisitions & RFQ

T-Code	Transaction Name	Description & Usage Scenario	Type
ME51N	Create Purchase Requisition	Create a request to purchase materials or services using the modern entry screen. Initiated by end users for non-stock items or automatically generated by MRP for stock replenishment.	★ Common
ME52N	Change Purchase Requisition	Modify an existing purchase requisition: quantity, delivery date, material, or account assignment. Used by requisitioners to update requirements before buyers convert the PR to a PO.
ME53N	Display Purchase Requisition	View purchase requisition details including approval status, assigned vendor, and conversion status. Used by approvers, buyers, and requisitioners to track PR status in the procurement workflow.
ME54N	Approve Purchase Requisition	Approve or reject a purchase requisition in the workflow release strategy. Used by authorized approvers (managers, procurement directors) to authorize spending.	★ Common
ME41	Create Request for Quotation	Issue a formal RFQ to one or more vendors inviting competitive price bids. Used in formal tendering processes for significant purchases requiring competitive evaluation.
ME47	Maintain Quotation	Enter vendor price response against an issued RFQ document. Used by buyers to record vendor quotation prices after receiving responses from suppliers.
ME49	Price Comparison List	Compare prices from multiple vendor quotations for the same requirement side by side. Used during vendor selection to identify best-value supplier before creating purchase order.	▲ Report
ME57	Assign and Process Requisitions	Assign unassigned purchase requisitions to vendors and convert to purchase orders or RFQs. Core buying workbench used daily by procurement team to process open requisitions.	★ Common

Purchase Orders & Contracts

T-Code	Transaction Name	Description & Usage Scenario	Type
ME21N	Create Purchase Order	Create a purchase order to a vendor for materials or services with full document overview. Most important MM transaction. Used by buyers daily to place orders with suppliers.	★ Common
ME22N	Change Purchase Order	Modify an existing purchase order: quantities, delivery dates, prices, or add new line items. Used throughout PO lifecycle: delivery date changes, quantity revisions, price adjustments.	★ Common
ME23N	Display Purchase Order	View PO details including ordered quantities, delivery confirmations, GR status, and invoice receipts. Used for PO tracking and as reference during goods receipt and invoice processing.	★ Common
ME2M	Purchase Orders by Material	List all purchase orders for a specific material within selection criteria. Used to review procurement history, track open orders, and monitor supplier delivery performance.	▲ Report
ME2N	Purchase Orders by PO Number	Display purchase orders with full details and filtering by vendor, document type, or plant. Used for comprehensive PO analysis and monitoring across the purchasing organization.	▲ Report
ME2L	Purchase Orders by Vendor	List all purchase orders for a specific vendor with status, quantities, and delivery information. Used for vendor performance monitoring and spend analysis by supplier.	▲ Report
ME31K	Create Contract (Value/Quantity)	Create a blanket purchase contract with a vendor for a defined value or quantity over a time period. Used for long-term supplier agreements where individual releases are made against the contract.
ME31L	Create Scheduling Agreement	Create a scheduling agreement with a vendor for regular delivery schedules over a period. Used in JIT or MRP-driven environments for regular replenishment from key suppliers.
ME38	Maintain Delivery Schedule	Maintain delivery schedule lines against an existing scheduling agreement. Used by planners to update delivery schedule based on current MRP requirements.	★ Common

Goods Receipt & Inventory Movements

T-Code	Transaction Name	Description & Usage Scenario	Type
MIGO	Goods Movement (Universal)	Universal transaction for all inventory movements: GR against PO, goods issue, transfer posting, return delivery, and scrapping. Most frequently used warehouse transaction. Movement type controls the accounting and stock impact.	★ Common
MB1A	Goods Issue (Classic)	Post goods issue to a cost center, order, network, or sales order. Classic alternative to MIGO for goods issues. Still used in some customer-specific workflows.
MB1B	Transfer Posting (Classic)	Transfer stock between plants, storage locations, or change stock type (e.g., QI to unrestricted). Used for stock transfers, releasing QI stock after inspection, or relocating stock between locations.
MB1C	Other Goods Receipts (Classic)	Receive goods not related to a purchase order: initial stock entry, free samples, returns from customer. Used for initial stock upload during go-live, goods returned from subcontracting, or sample receipts.
MB51	Material Document List	List all goods movement documents for materials within selection criteria. Used for stock movement audit trail, goods receipt confirmation, and inventory reconciliation.	▲ Report
MB54	Display Consignment Stocks	Display consignment stocks at plant level showing vendor-owned stock at your premises. Used by AP team to monitor vendor-owned stock before settlement of consignment withdrawals.	▲ Report
MBNL	Subsequent Delivery for Returns	Create a subsequent delivery document for goods returned to vendor. Used when vendor sends replacement for returned defective goods.

Physical Inventory & Invoice Verification

T-Code	Transaction Name	Description & Usage Scenario	Type
MI01	Create Physical Inventory Document	Create inventory count sheets for physical stock counting at storage location and material level. Used at start of annual stocktake or cycle count. Defines what needs to be counted.
MI04	Enter Inventory Count	Record actual counted quantities against a physical inventory document. Used by warehouse staff during the physical counting process to record actual stock found.	★ Common
MI07	Post Inventory Differences	Post the variance between counted quantities and system stock to adjust the book stock. Used after count completion and variance review to update SAP stock to reflect actual physical count.	★ Common
MI20	Print Physical Inventory List	Print count sheets for distribution to warehouse staff before a physical inventory count. Used by warehouse managers to prepare for the physical inventory counting exercise.
MIRO	Logistics Invoice Verification	Post vendor invoices with reference to purchase orders, performing 3-way match validation. Primary AP posting transaction for procurement-related invoices. Validates against PO price and GR quantity.	★ Common
MIR7	Park Incoming Invoice	Park a vendor invoice for review before final posting. Does not create accounting entries. Used in invoice approval workflows where invoices need review before being posted.