SAP S/4HANA
MM Materials Management

Establishes the business context and process-level foundation required before any SAP MM configuration begins. Freshers who jump straight to transaction codes without understanding why SAP MM exists consistently struggle in interviews and on projects. This module addresses that gap directly.

• Role and scope of SAP MM in an enterprise
• Overview of the Procure-to-Pay process
• Key MM sub-modules: Purchasing, Inventory Management, Invoice Verification, and Valuation
• Integration of MM with FI and SD
• SAP MM organizational elements at a conceptual level
• Types of SAP MM projects: implementation, support, and rollout
• SAP Fiori apps relevant to MM

SAP MM has its own organisational hierarchy that controls how procurement activities are executed, which vendors supply which plants, and how inventory is managed across locations. This structure must be correctly configured and linked to the FI enterprise structure before any procurement transaction can be processed.

• Client as the highest organizational level
• Company Code as the legal entity for accounting
• Plant as the operational unit for goods receipt and consumption
• Storage Location for physical stock management
• Purchasing Organization as the procurement entity
• Purchasing Group as the buyer responsible for materials
• Assignment of MM organizational elements to Company Code

A vendor master record contains all information required to raise purchase orders, post goods receipts, verify invoices, and process payments. In SAP S/4HANA, vendors are managed through the Business Partner concept, integrating both MM and FI vendor data in a single record.

• Business Partner concept for vendor management
• Vendor account groups and their control functions
• Vendor master views: General Data, Purchasing Organization Data, and Company Code Data
• Number ranges for vendor master records
• Reconciliation account assignment for AP postings
• Payment terms and bank details in vendor master

The material master is the central record for every material purchased, stored, or consumed by an organisation. In SAP MM, specific material master views control how a material is procured, valued, stored, and planned.

• Material master structure and views relevant to MM
• Material types and their control functions
• Basic Data, Purchasing, MRP, Accounting, and Storage views
• Unit of measure and unit of measure conversions
• Material group and purchasing info record
• Material master creation using transaction MM01
• Mass maintenance of material master using MM17

A Purchasing Info Record stores the relationship between a vendor and a material, including the agreed price, delivery time, and purchasing conditions. The Source List defines which vendors are approved to supply a specific material to a specific plant.

• Purchasing Info Record concept and creation
• Info record categories: standard, subcontracting, pipeline, and consignment
• Price and condition maintenance in info records
• Source List configuration and mandatory source list activation
• Fixed sources of supply

The Procure-to-Pay cycle formally begins with a Purchase Requisition — an internal request to procure a material or service. Once approved, the Purchase Requisition is converted into a Purchase Order, which is the legally binding external document sent to the vendor.

• Purchase Requisition creation and approval workflow
• Conversion of Purchase Requisition to Purchase Order
• Purchase Order document types and item categories
• Header and item level data in purchase orders
• Account assignment categories in purchase orders
• Release strategy for purchase orders
• Purchase Order output and transmission to vendor

When goods are physically received from a vendor, the receipt must be recorded in SAP against the purchase order. Goods Receipt updates inventory and automatically generates an accounting document posting the stock value and GR/IR liability.

• Goods Receipt posting against purchase order using MIGO
• Movement types and their control logic
• GR/IR clearing account concept
• Stock types: unrestricted, quality inspection, and blocked stock
• Goods Receipt document and material document
• Accounting document generated at Goods Receipt
• Return delivery to vendor
• Goods Receipt for non-valuated materials and service entry sheets

After goods are received, the vendor sends an invoice. In SAP MM, the vendor invoice is verified against the purchase order and goods receipt in a process called Logistics Invoice Verification. This three-way match ensures payment accuracy and prevents overpayment.

• Logistics Invoice Verification concept and three-way match
• Invoice posting using transaction MIRO
• Variance handling: price variance and quantity variance
• Invoice blocks: tolerance-based and manual blocks
• Credit memo processing from vendor
• Subsequent debit and subsequent credit
• Parking and holding vendor invoices
• GR/IR clearing account settlement

Every goods movement in SAP MM generates an automatic accounting document. The accounts updated depend on the valuation class assigned in the material master and the account determination configuration. This module explains how SAP determines which G/L accounts to use for inventory postings.

• Valuation area and valuation level concept
• Material price control: moving average price and standard price
• Valuation class and its role in account determination
• Account category reference
• Automatic account determination using transaction OBYC
• Stock account, GR/IR account, price difference account
• Valuation grouping code

Organisations that procure the same materials regularly from the same vendors enter into long-term procurement agreements. SAP MM supports Contracts for value or quantity commitments, and Scheduling Agreements for delivery schedule-based procurement.

• Quantity contract and value contract
• Contract creation and release order processing
• Scheduling Agreement concept and delivery schedule maintenance
• Scheduling Agreement with and without release
• Monitoring contract and scheduling agreement consumption

Beyond standard procurement, organisations require specialised scenarios including subcontracting, consignment procurement, stock transfers between plants, and service procurement. SAP MM supports all these through specific document types and item categories.

• Subcontracting process: providing components to vendor and receiving finished goods
• Consignment procurement: vendor stock held at company premises
• Stock transport order: inter-plant stock transfer
• Service procurement and service entry sheet
• Pipeline procurement for utilities and commodities

Organisations must periodically verify that physical stock matches the stock quantities recorded in SAP. SAP MM supports Physical Inventory management through structured count procedures, difference posting, and inventory adjustment.

• Physical inventory document creation
• Stock count entry and difference calculation
• Inventory difference posting and accounting impact
• Cycle counting for high-value materials
• Special stock categories: vendor consignment, subcontracting, project stock
• Stock overview using MMBE
• Movement types for stock transfer and stock adjustment

MRP is the planning engine in SAP that automatically calculates material requirements based on demand from sales orders, production orders, or planned independent requirements. MRP ensures that the right materials are available at the right time in the right quantity.

• MRP types: consumption-based planning and demand-driven planning
• MRP parameters in material master: MRP type, lot size, reorder point, safety stock
• MRP run execution using MD01 or MD02
• MRP results: planned orders and purchase requisitions
• Conversion of planned orders to purchase requisitions and purchase orders
• Stock and requirements list using MD04
• Exception messages in MRP results

Organisations require approval processes for purchase requisitions and purchase orders above certain values or for specific material types. SAP MM manages this through Release Strategy configuration, which defines approval levels, release conditions, and release codes.

• Release strategy concept in SAP MM
• Release group and release codes
• Release conditions based on value, plant, or material group
• Release indicator and its impact on purchase order processing
• Release procedure for purchase requisitions and purchase orders
• Rejection and re-release scenarios

SAP MM provides a range of standard reports for monitoring procurement activities, open purchase orders, goods receipt status, invoice verification status, and stock levels. SAP S/4HANA also enables real-time analytical reporting through SAP Fiori and embedded analytics.

• Purchase order list and open PO reports
• Goods receipt and invoice status reports
• GR/IR reconciliation report using MB5S
• Stock overview and stock valuation reports using MMBE
• Vendor performance analysis
• SAP Fiori analytical apps for MM
• Material document list using MB51

This module integrates all MM learning into a complete, end-to-end Procure-to-Pay simulation. Learners execute every step from purchase requisition to vendor payment, demonstrating full process competency. This is the most important module for interview preparation and project readiness.

• Purchase Requisition creation and approval
• Purchase Order creation with pricing from info record
• Goods Receipt posting and accounting verification
• Invoice Verification using three-way match
• Vendor payment processing in Finance using F110
• Full document flow review from PR to Payment
• GR/IR clearing account reconciliation