SAP MM Organizational Structure

Prepared by Harshvrdhan Rathore

The five organizational units that Materials Management runs on — how they connect, what each one means, and a worked example with real-looking codes and names.

Part 1

Structure

Company code is the top unit for MM. Purchasing runs down the left side, physical stock down the right; the purchasing organization is linked to the plants it buys for.

Legal entityCompany CodeBooks, balance sheet, GST

Buying unitPurchasing OrganizationNegotiates with vendors

assigned to

Buyer / deskPurchasing GroupWho handles the purchase

Dashed: not formally assigned — used inside the purchasing org

Factory / locationPlantWhere goods are made or stocked

Store inside plantStorage LocationWhere stock physically sits

Part 2

Definitions

Company Code

The smallest unit in SAP for which a complete, self-contained set of accounts is drawn up. It represents one legal company: balance sheet, profit and loss and tax returns are made at this level. Every plant and purchasing value ends up in a company code's books.

Field length: 4 characters
Assigned to: Client (and a controlling area)
Owned by: Finance

Example: 1000 — ABC Industries Pvt. Ltd.

Purchasing Organization

The unit that buys materials and services, negotiates prices and terms with vendors and is legally responsible for purchase orders. Vendor purchasing data, info records and conditions are kept at this level. It can be plant-specific, cross-plant, or cross-company (when not assigned to any company code).

Field length: 4 characters
Assigned to: Company code (optional) and one or more plants
Owned by: Purchase

Example: 1000 — ABC Central Purchasing

Purchasing Group

A buyer or group of buyers responsible for certain materials or purchasing activities. It is the internal contact for day-to-day purchasing and the vendor's point of contact. Used in reports, release strategies and for routing work to the right buyer.

Field length: 3 characters
Assigned to: Nothing — defined at client level and entered in the material master and on each purchasing document
Owned by: Purchase

Example: 101 — Raw Material Buyer

Plant

A location where materials are produced, stored or where services are provided — a factory, warehouse or branch. Stock is managed and valued per plant, MRP runs per plant and most material master data (purchasing, MRP, storage) is kept at plant level.

Field length: 4 characters
Assigned to: Exactly one company code
Owned by: Production / Stores

Example: 1100 — Jaipur Plant

Storage Location

A place inside a plant where stock is physically kept, such as a raw material store or a finished goods store. Stock quantities are tracked by storage location; value is tracked at plant level. The same storage location code can be reused in different plants.

Field length: 4 characters
Assigned to: One plant (defined inside the plant)
Owned by: Stores

Example: 0001 — Raw Material Store

Part 3

Example with codes and values

One company with two plants. A single central purchasing organization buys for both plants through three purchasing groups. Codes and names are sample values — replace them with the client's.

Company Code1000ABC Industries Pvt. Ltd.

Purchasing Org1000ABC Central PurchasingAssigned to plants 1100 and 1200

Purchasing Group101Raw Material Buyer

Purchasing Group102Packaging Buyer

Purchasing Group103Spares & Consumables

Plant1100Jaipur Plant

0001Raw Material Store

0002Finished Goods Store

0003Rejection Store

Plant1200Pune Plant

0001Raw Material Store

0002Finished Goods Store

0004Spares Store

Org unit	Code	Name	Assigned to
Company Code	1000	ABC Industries Pvt. Ltd.	Client
Purchasing Organization	1000	ABC Central Purchasing	Company code 1000; plants 1100 and 1200
Purchasing Group	101	Raw Material Buyer	— (client level)
Purchasing Group	102	Packaging Buyer	— (client level)
Purchasing Group	103	Spares & Consumables	— (client level)
Plant	1100	Jaipur Plant	Company code 1000
Plant	1200	Pune Plant	Company code 1000
Storage Location	0001	Raw Material Store	Plant 1100 and plant 1200
Storage Location	0002	Finished Goods Store	Plant 1100 and plant 1200
Storage Location	0003	Rejection Store	Plant 1100
Storage Location	0004	Spares Store	Plant 1200

Storage location codes are unique only within a plant, so 0001 in Jaipur and 0001 in Pune are two different stores. Sample codes follow a common convention (plants numbered under their company code); any 4-character code works.