SAP Material Management in short SAP MM is a core module in SAP Enterprise Resource Planning system, which is designed to help organizations to manage all aspects of inventory control, purchasing, material management, material valuation, invoice verification, and procurement in general, which covers almost all the processes involved in acquiring goods and services flows across the supply chain. It also provides detailed analysis and reporting on procurement, inventory level and material movements.

Below we will discuss several important sub-modules within material management along with SAP MM T-codes related to them.

Organizational Structure Creation

Creation organization structure involves creating a hierarchical relationship between different organizational units e.g. creating and assigning a code to a company, creating a plant, storage location or purchasing group etc. Below are some key transaction codes for organizational structure.

T-Code	Purpose	Application Component	Module
OX15	To create a company	FI-GL	General Ledger
OX02	To assign code to a company	FI-GL	General Ledger
OX10	To create a Plant entry	MM-IM	Inventory Management
OX09	To create a storage Location	MM-IM	Inventory Management
OX08	To create a purchasing organization	MM-PUR	Purchasing
OME4	To create a purchasing group	MM-PUR	Purchasing
OX18	To assign a plant to company code	MM-IM	Inventory Management
OX01	To assign purchasing organization to company code	MM-PUR	Purchasing
OX17	To assign purchasing organization to a plant	MM-PUR	Purchasing

Material Master Data Management

Material Master Data Management is another important function within material management module, which serves as a central repository for material requirement planning, all types of material data. The following are some important SAP MM T-codes for material master data management.

T-Code	Purpose	Application Component	Module
MM01	To create a material type	MM-MD	Material Master
MM02	To change an existing material record	MM-MD	Material Master
MM03	To display an existing material record	MM-MD	Material Master
MM50	To list extendable materials	MM-MD	Material Master
MMBE	Provides stock level overview	MM-IM	Material Master
MMI1	To create an operating supplies material record	MM-MD	Material Master
MMN1	To create a non-stock material record	MM-MD	Material Master
MMS1	To create a material record for a service	MM-MD	Material Master
MMU1	To create a non-valuated material record	MM-MD	Material Master

Vendor Master Data Management

Vendor Master Data Management sub-module focuses on maintaining the information regarding suppliers for an organization. Following is an important SAP MM t-code list for vendor master data management.

T-Code	Purpose	Application Component	Module
XK01	To create a new vendor record (Centrally)	MM-Vendor	Vendor Master
XK02	To change an existing vendor record (Centrally)	MM-Vendor	Vendor Master
XK03	To display and existing vendor record (Centrally)	MM-Vendor	Vendor Master
MK01	To create vendor (purchasing Data Only)	MM-Vendor	Vendor Master
MK02	To change existing vendor (Purchasing Data)	MM-Vendor	Vendor Master
MK03	To display existing vendor (Purchasing Data)	MM-Vendor	Vendor Master
ML33	To create vendor conditions	MM-SRV	Service Management

Purchasing Info Record

Purchasing Info Record function is an important bridge between vendor information and material, serves as a central repository for a specific vendor and material combination. The following are some important T-codes in SAP MM for purchase info records.

T-Code	Purpose	Application Component	Module
ME11	To create Purchasing Info Record	MM-PUR-VM	Purchasing Info Record
ME12	To change an existing Purchasing Info Record	MM-PUR-VM	Purchasing Info Record
ME13	To display an existing Purchasing Info Record	MM-PUR-VM	Purchasing Info Record

Source List Management

Source List Management is another key function in material management module to help organizations maintain a clear procurement process, by maintaining a list of approved and authorized vendors for specific materials within a plant, which ensures that purchasing is from preferred and contracted vendors. Follow are the SAP MM transaction codes for source list management transactions.

T-Code	Purpose	Application Component	Module
ME01	To create a Source List	MM-PUR-SQ	Source Determination
ME03	To change an existing Source List	MM-PUR-SQ	Source Determination
ME04	To display and existing Source List	MM-PUR-SQ	Source Determination

Purchase Requisition Management

Purchase Requisition Management is yet another important process which is used to initiate a procurement cycle leading to the creation of purchase orders. Below is a transaction codes list for Purchase Requisition Management.

T-Code	Purpose	Application Component	Module
ME51N	To create a Purchase Requisition	MM-PUR-REQ	Purchase Requisition
ME52N	To change and existing Purchase Requisition	MM-PUR-REQ	Purchase Requisition
ME53N	To display an existing Purchase Requisition	MM-PUR-REQ	Purchase Requisition
ME54	Approve or release Purchase Requisition	MM-PUR-REQ	Purchase Requisition
ME55	To approve collective Purchase Requisition	MM-PUR-REQ	Purchase Requisition
ME56	Assign source to Purchase Requisition	MM-PUR-REQ	Purchase Requisition

Request for Quotation (RFQ)

RFQ module is used to request quotations from multiple vendors for materials, then vendors submit their quotations in response to RFQ. Below is a list of t-codes for RFQ.

T-Code	Purpose	Application Component	Module
ME41	To create a new RFQ	MM-PUR-RFQ	Request for Quotation
ME42	To change an existing RFQ	MM-PUR-RFQ	Request for Quotation
ME43	To display and existing RFQ	MM-PUR-RFQ	Request for Quotation

Purchase Order (PO) Management

Purchase Order Management is an important process in SAP MM module to legally bind the agreement with suppliers, outlining the terms and conditions, describing the requirements for services, materials, pricing, delivery dates and quantities. Below are important t-codes for Purchase Order Management.

T-Code	Purpose	Application Component	Module
ME21N	To create Purchase Order	MM-PUR-PO	Purchase Order
ME22N	To change an existing Purchase Order	MM-PUR-PO	Purchase Order
ME23N	To display an existing Purchase Order	MM-PUR-PO	Purchase Order
ME28	To approve or release Purchase Orders	MM-PUR-PO	Purchase Order
ME2C	To display Purchase Orders by Material Group	MM-PUR-PO	Purchase Order
ME2L	To display Purchase Orders by Vendor	MM-PUR-PO	Purchase Order

Scheduling Agreements

Scheduling Agreements provides the creation of delivery schedules for suppliers, such as how much material and when to be delivered. Below is a list of important t-codes for this module:

T-Code	Purpose	Application Component	Module
ME31L	To create new Scheduling Agreement	MM-PUR-OA	Outline Agreements
ME32L	To change an existing Scheduling Agreement	MM-PUR-OA	Outline Agreement
ME33L	To display an existing Scheduling Agreement	MM-PUR-OA	Outline Agreement

Goods Movement

Goods Movement process in SAP MM module manages the physical movement of materials within a company, critical for maintaining track of materials flow and accurate inventory. Below is a list of t-codes for Goods Movement.

T-Code	Purpose	Application Component	Module
MIGO	To Post Goods Movement records	MM-IM	Inventory Management
MB1A	To create a Goods Issue or Goods Withdrawal record	MM-IM	Inventory Management
MB1B	To create a Transfer Posting record	MM-IM	Inventory Management
MB1C	To generate other Goods Receipts	MM-IM	Inventory Management
MB01	To create Goods Receipt specifically for Purchase Order	MM-IM	Inventory Management

Physical Inventory Management

Physical Inventory Management process ensures the accuracy of physical stock with system stock, providing accurate inventory counts of quantities recorded in SAP system. Below is a list of t-codes for Physical Inventory Management.

T-Code	Purpose	Application Component	Module
MI01	To create new Physical Inventory record	MM-IM-PI	Physical Inventory
MI02	To change existing Physical Inventory record	MM-IM-PI	Physical Inventory
MI03	To display existing Physical Inventory record	MM-IM-PI	Physical Inventory
MI04	To enter Inventory Count in record	MM-IM-PI	Physical Inventory
MI05	To change Inventory Count in record	MM-IM-PI	Physical Inventory
MI06	To display Inventory Count in record	MM-IM-PI	Physical Inventory
MI07	To process list of differences in physical inventory and count in system	MM-IM-PI	Physical Inventory

Invoice Verification

SAP Invoice Verification component manages the processing and verification of vendor invoices, to make sure that they are accurate and match the related purchase order and goods receipts in order to facilitate the timely payments to vendors. Below is a list of t-codes for Invoice Verification module.

T-Code	Purpose	Application Component	Module
MIRO	To enter Incoming Vendor Invoice record	MM-IV	Invoice Verification
MIRA	Provides Fast Invoice Entry method	MM-IV	Invoice Verification
MR8M	To cancel Invoice entry	MM-IV	Invoice Verification
MRBR	To release blocked Invoices	MM-IV	Invoice Verification

Stock Overview and Reports

Stock Overview and Reports module provides sets of tools for reporting on levels of inventory for plants, locations and storage. Below is a list of t-code for Stock Overview and Reports.

T-Code	Purpose	Application Component	Module
MMBE	Provides a comprehensive stock overview	MM-IM	Inventory Management
MB52	Displays a list of Warehouse Stocks on Hand	MM-IM	Inventory Management
MB51	Displays a list of Material Document	MM-IM	Inventory Management

Service Management

SAP also provides Service Management functions within material management module, which can be used for external services provided by vendors such as consulting services. Below is a list of t-codes for Service Management module of Materials Management.

T-Code	Purpose	Application Component	Module
AC02	Creates, manages and displays Service Master records	MM-SRV	Service Management
ML81N	Create a Service Entry Sheet	MM-SRV	Service Management
MRRL	Performs Evaluated Receipt Settlement for services	MM-IV	Service Management

Customization and Settings

Customization and settings in material management is used to modify the system according to organization’s specific needs. The primary transaction for accessing customization menu in SAP is SAP Project Reference Object (SPRO), and transaction to customize movement types and other inventory management settings is OMJJ. Below is a list of t-codes for customization and settings. module.

T-Code	Purpose	Application Component	Module
OMJJ	To define new custom Movement Types	MM-IM	Inventory Management
OMR6	To define Tolerance Limits for Invoice Verification	MM-IV	Inventory Management
MMNR	To define Material Master Number Ranges	MM-MD	Material Master
MMPV	To close period for Materials posting	MM-IM	Inventory Management

Additional Utilities and Reports

Beyond the core functionalities, material management provides a wide range of additional reports and utilities designed to offer deeper insights, analysis and support for different business processes. Below is a list of t-code for additional utilities and reports with in SAP MM.

T-Code	Purpose	Application Component	Module
MI20	Print list of differences between Physical and system stock	MM-IM-PI	Physical Inventory
MB24	Displays reservations for specific material	MM-IM	Inventory Management
MB25	Displays reservations based on Account Assignment	MM-IM	Inventory Management
MIR5	Displays list of Invoice Documents	MM-IV	Invoice Verification
MIR6	Provides an overview of Invoice documents	MM-IV	Invoice Verification