MM Inventory Management Guide
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`Version
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`Version
`Prepared for R/3 Release 2.2.
`August 94
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`Copyrights
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`~1994 SAP AG. All rights reserved.
`Neither this documentation nor any part of it may be copied or reproduced in any form or by any
`means or translated into another language, without the prior consent of SAP AG.
`SAP AG makes no warranties or represenations with respect to the content hereof and specifically
`disclaims any implied warranties of merchantability or fitness for any particular purpose. SAP AG
`assumes no responsibility for any errors that may appear in this document. The information
`contained in this document is subject to change without notice. SAP AG reserves the right to
`make any such changes without obligation to notify any person of such revision or changes. SAP
`AG makes no commitment to keep the information contained herein up to date.
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`Introduction
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`This section contains general information on the SAP Inventory Management system and its
`integration both in the logistics system and in the entire R/3 System.
`It contains the following topics:
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`What is Inventory Management?
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`SAP’s Inventory Management system allows you to
`¯ manage your stocks on a quantity and value basis
`¯ plan, enter, and check any goods movements
`¯
`carry out physical inventory
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`Managing Stocks By Quantity
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`In the Inventory Management system, the physical stocks reflect all transactions resulting in a
`change in stock and thus in updated inventory levels. The user can easily obtain an overview of
`the current stocks of any given material.
`For each material, not only the stocks in the warehouse are shown, but also the stocks ordered but
`not yet delivered, reserved for production or for a customer, and the stocks in quality inspection can
`be monitored.
`If a further subdivision by lots is required for a material, one batch per lot is possible. These
`batches are then managed individually in the stock.
`Special stocks from the vendor or from the customer (for example, consignment stocks) are
`managed separately from your company’s own stock.
`This guide discusses the various stock types used in the SAP System and how the corresponding
`stocks vary due to goods movements.
`For more information on special stocks, see MM - Managing Special Stocks.
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`Managing Stocks By Value
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`The stocks are managed not only on a quantity basis but also by value - a prerequisite for cost
`accounting. With every goods movement, the following values are updated:
`¯ the stock value for inventory management
`¯ the account assignment for cost accounting
`¯ the corresponding G/L accounts for financial accounting via automatic account assignment
`Both the quantity and the value are updated automatically when entering a goods movement.
`This guide mainly deals with monitoring inventories by quantity. Monitoring inventories by value is
`discussed in detail in the MM Material Valuation Guide.
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`Planning, Entry and Proof of Goods Movements
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`Goods movements include both "external" movements (goods receipts from external procurement,
`goods issues for sales orders) and "internal" movements (goods receipts from production,
`withdrawals of material for internal purposes, stock transfers, and transfer postings).
`For each goods movement a document is created, which is used by the system to update quantities
`and values and serves as proof of goods movements.
`Goods receipt/issue slips are printed to facilitate physical movements and the monitoring of the
`individual stocks in the warehouse.
`This guide focusses on planning and entering all types of goods movements.
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`Physical Inventory
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`The adjustment between the physical stocks and the book inventories can be carried out
`independently of the physical inventory procedure selected.
`The physical inventory process is described in the MM Material Valuation Guide.
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`Inventory Management and Warehouse Management
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`The Inventory Management system can be extended by the Warehouse Management system
`(WM), which manages storage bins in complex warehouse structures.
`While Inventory Management manages the stocks by quantity and value, the Warehouse
`Management component does even more by reflecting the special structure of a warehouse, by
`monitoring the allocation of the storage bins and any transfer transactions in the warehouse via
`completion confirmation procedures.
`For detailed information on Warehouse Management, refer to the MM Warehouse Management
`Guide.
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`Klntegration of Inventory Management in the Logistics System
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`Inventory Management (/M) is part of the MM Materials Management module and is fully integrated
`in the entire logistics system.
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`I
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`MRP
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`I
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`J
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`Warehouse
`rngmt
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`Master data
`Material
`Batches
`Vendor
`G/L account=
`Customer
`Bin locations
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`Inventory
`management
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`Goods Transfer
`issue posti ng
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`I
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`Invoice
`verification
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`¯
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`Financial I
`accounting
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`Consumption/Sale=
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`Material is procured from external or internal sources on the basis of the requirements determined
`by Material Requirements Planning. The delivery is entered in Inventory Management as a goods
`receipt. The material is stored (and managed under Inventory Management) until it is delivered to
`customers (Sales & Distribution), or is used for internal purposes (for example, for production).
`During all transactions, Inventory Management accesses both master data (such as material
`master data) and transaction data (such as purchasing data) which is shared by all logistics
`components.
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`Integration in Materials Management (MM)
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`As a component of Materials Management, Inventory Management is directly linked with Material
`Requirements Planning, Purchasing, and Invoice Verification.
`Inventory management forms the basis for material requirements planning which takes into account
`not only physical stocks but also planned movements (requirements, receipts).
`When a material is ordered from a vendor, Inventory Management posts the delivery as a goods
`receipt with reference to the purchase order. The vendor invoice is processed later by Invoice
`Verification. Here, the quantities and values from the purchase order and the goods receipt
`document are checked to ensure conforming with those in the invoice.
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`Integration in Production Planning (PP)
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`Inventory Management is closely linked to the Production Planning module:
`¯
`Inventory Management is responsible for staging of the components required for production
`orders
`¯ The receipt of the finished products into the warehouse is posted in Inventory Management.
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`Integration in Sales & Distribution (SD)
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`As soon as you enter a sales order, you can initiate a dynamic availability check of stocks on hand.
`When the delivery is created, the quantity to be delivered is marked as "Scheduled for delivery." It
`is deducted from the total stock when the goods issue is posted.
`These SD transactions are included in the Sales & Distribution system and are described in detail
`in the SD Shipping Guide.
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`Integration in Quality Management (QM)
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`In the case of a goods movement, the system determines whether the material is subject to an
`inspection operation. If so, a corresponding acitivity is initiated for the movement in the Quality
`Management system.
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`Integration in Plant Maintenance (PM)
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`It is possible to post goods movements with reference to equipment BOMs.
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`Integration in the Logistics Information System (LIS)
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`With the Inventory Controlling component, the Logistics Information System offers a tool for
`collecting, compressing, and evaluating inventory management data. For more information on this
`subject, see the MM Inventory Controlling Guide.
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`Inventory Management in the R/3 System
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`The R/3 System consists of various modules. The complete integration of these modules allows
`various departments in a company to share and maintain the same information.
`A smooth material flow requires good communication between all participants in the process. The
`required flow of information is ensured by the fact that Inventory Management is fully integrated in
`the R/3 System and communicates with other R/3 modules, such as:
`¯ Financial Accounting (FI)
`Inventory Management by quantity and by value not only causes the stock value in the material
`master record to be updated with every goods receipt/goods issue, but also the corresponding
`accounts of financial accounting. This is accomplished via automatic account assignment, a
`procedure during which the system determines the accounts relevant for the given goods
`movements.
`Controlling (CO)
`The interface to the cost accounting system (referred to as Controlling) is activated in the case
`of material consumption (for example, when materials are issued for various account
`assignment objects such as orders or cost centers).
`Cost accounting is also involved when goods receipts are assigned directly to cost centers or
`orders.
`¯ Assets Management (AM)
`If materials for an asset are procured externally or withdrawn from the warehouse/stores, the
`corresponding goods movements are assigned to the asset account.
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`Master Data
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`Overview
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`This section contains the following topics:
`..T.h e.RL3...O.om~...8.truc.t u r.e
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`The R/3 Company Structure
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`In order to meet the organizational requirements of different companies, the R/3 System allows a
`flexible data organization. When the SAP System is installed, the organization of the company is
`reproduced as closely as possible in the system.
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`Views
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`Organizational units
`Company I
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`Controllilng areas I
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`I I IPurchasingorganizationsI
`I/
`C°mpalyc°des
` "u’ iin’ro’s
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`I
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`Plants
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`Sales organ izations
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`II
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`i
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`Accounting i
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`I Internal logistics
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`( MR P/Production ) I
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`I Inventory managem ent I I Storage locatiorl s/Batch es/Special stocks I
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`From an Inventory Management point of view, the company structure is represented by the
`following organizational elements:
`Client
`a grouping of legal, organizational, business-related and/or administrative entities with a common
`purpose.
`Example: a group within a corporation (for example, a consulting group)
`Company code
`Legally independent entity, within a client, that has its own balance sheet and creates its own
`profit-and-loss statement.
`Example: a company or subsidiary
`Plant
`Location of operation within a company code.
`Example: a plant, office, or branch
`Storage location
`Location of physical deposits of stock within a plant.
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`Example: a warehouse or storage area
`Valuation area
`Organizational level at which a material’s stock value is managed. The valuation area can
`correspond to the following entities:
`-
`plant
`company code
`-
`In Inventory Management, work is basically done at plant and storage location levels. When you
`enter a goods movement, you only have to enter the plant and the storage location of the goods.
`The system derives the company code from the plant using the valuation area.
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`Material Master Data
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`What Is the Material Master?
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`The material master contains descriptions of the materials a company procures, produces, and
`stores. The material master is the central repository of material information (such as stock levels)
`for the company.
`The integration of all material data in a single database eliminates redundant data. The data
`stored in the material master is used by Inventory Management, as well as by other components
`such as Purchasing, Material Requirements Planning (MRP), and Invoice Verification.
`Note
`This guide describes master data from the viewpoint of Inventory Management only. For a
`detailed description of material master data, as well as instructions for creating, changing, or
`displaying material master records, refer to the guide MM - Managing Material Master Data.
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`Materials With or Without a Material Master Record
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`Every material that is included in stock is defined in a material master record and identified by a
`material number.
`It is possible, however, for purchasing department to order materials (or services) for which no
`material master record is defined. These are usually materials that are only purchased once (for
`example, material for paving a parking lot). These materials, which do not have a material
`number, are described by a text and an assignment to a material group, both of which are entered
`in the purchase order. They are not included in stock; instead, when they are received, they are
`posted to consumption.
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`How Is Information Organized in the Material Master Record?
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`In the material master record, information is organized in a hierarchical fashion, according to
`organizational levels, as shown in the following figure.
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`I
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`I General data
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`M ateri al num her
`Description
`Units o/measure
`Technical data
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`t
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`I I
`MRPtype
`Planned deliverytim e
`Purchasing group
`B atch in dicator
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`|
`Storage Iocati on-s pecific II
`I
`data
`Storage conditi ons
`Storagetime
`Stockfields
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`I
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`I Batch-specific data
`U se-by date
`Lastgoods receipt
`Stockfields
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`P rice control
`Accountgroup
`Price
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`Forecastdata
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`Consumption data
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`I
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`I
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`Organizational Levels
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`The following organizational levels are relevant for Inventory Management:
`¯ general data
`This level contains material data that applies to all subsidiaries, plants, and warehouses.
`Examples of general data are the description, weight, and volume of a material. You access
`general data with the material number.
`¯ plant data
`This level contains material data that applies to one particular plant, for example, the material’s
`MRP data, its batch management requirement, and its plant-level stocks. Data defined at this
`level applies to all storage locations in a plant. You access plant data with the plant number.
`¯ storage location data
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`This level contains material data specific to a storage location. The inventory data is an
`example of the data maintained for each storage location. You access storage location data
`with the plant number and the storage location number.
`¯ valuation data
`This level contains data for the valuation of a material (for example, valuation price). You
`access valuation data with either the plant number or the company code, depending on the
`system setting (valuation level). The system derives the company code from this data. If,
`however, the material is split-valuated, the valuation data is defined at valuation-type level.
`This structure makes it easier to manage information about materials across an entire company. It
`also prevents redundant storage of material data when the same material is used in more than one
`plant or stored in more than one storage location.
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`Views
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`You maintain and display material master records with views, as shown in the following figure.
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`Engineering/ I
`Design
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`|
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`!’i~rc h~ sln
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`MRP
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`I~~ ~t~Mma "1 gl
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`I
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`Stockin plant/
`storage location
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`I
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`Planning I
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`Forecasting
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`Accou ntin, h°using I I~°:r~ I~nt
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`For example, when you maintain material data from the viewpoint of storage, the system displays
`only the data that is relevant for storage of the material, regardless of the organizational level data
`is stored at. General data that is relevant for more than one view (for example, the material’s
`description, its weight, and its volume) appears in several views.
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`Which Data is Relevant for Inventory Management?
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`The views that are important for Inventory Management are described here. Each view is
`illustrated by an example.
`¯ Work Scheduling
`Information for producing the material. Examples: production unit, overdelivery and
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`underdelivery tolerances allowed.
`¯ Accounting
`Price and accounting information. Examples: type of price control and valuation class.
`Maintenance of this view is mandatory for Inventory Management, if the material type indicates
`that the material is managed by value in stock.
`¯ MRP
`Information for MRP. Examples: safety stock, reorder level, availability check.
`¯ Purchasing
`Procurement information for a material. Examples: overdelivery and underdelivery tolerances,
`purchasing order unit of measure (order unit).
`¯ Classification
`Typical data for classification of the material. Examples: class, characteristic.
`¯ Storage
`Information for warehousing and storing the material. Examples: unit of issue, storage
`conditions, fixed bin location at the storage location.
`¯ Quality Management
`Information for sampling and inspecting a material. Examples: indicator for goods receipt via
`quality inspection, sampling on a percentage basis.
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`Which Data is Required for Inventory Management?
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`For inventory management, you must maintain the following data:
`¯ Plant data
`This data can be maintained via different views (for example, via Purchasing, Storage, Work
`scheduling). You have to maintain at least one view that requires the entry of the organizational
`level plant.
`¯ Valuation data
`Valuation data is required for managing the stock by value. You maintain this data via the
`Accounting view.
`¯ Storage location data
`You maintain the storage location data via the Storage view. This view is required for Inventory
`Management and can be maintained automatically (see following topics).
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`Is it Necessary to Enter Storage Data for All Storage Locations ?
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`If a material is located in a storage location, the storage data for that storage location must exist in
`the material master record, so that the system can manage the stock quantities at storage-location
`level. Storage data can be manually entered when the material master record is created, or it can
`be automatically created during the first goods receipt into that storage location.
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`Automatic Creation of Storage Data
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`If automatic creation of storage data is allowed in that plant and for that movement type, the
`storage data is created automatically during the first goods receipt into that storage location.
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`Manual Creation of Storage Data
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`You must enter the storage data for a storage location manually before you post the first goods
`receipt to that storage location if
`¯ automatic creation of storage data is not allowed in that plant or for that movement type
`¯ you want to define special data for the material at the storage location (for example, fixed bin
`location for the material in the storage location)
`If the only data missing from the material master record for a new storage location is the storage
`data, you can select Other -~ Create storage Ioc. from the Material Master menu to extend the
`material master record by the storage data for this storage location (refer to the guide MM -
`Managing Material Master Data).
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`What Is a Material Type ?
`
`Materials are assigned different material types, according to their usage in the company (for
`example, raw material, finished product). A material can only have one material type.
`A material’s type determines whether number assignment for that material is external or internal.
`also determines which views can be maintained for the material. For example, no sales data can
`be maintained for raw materials.
`In Inventory Management, the material type plays an important role in the following:
`¯ type of procurement
`¯ type of inventory management
`¯ value updates of stock accounts
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`Type of Procurement
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`It is possible to define for every material type whether materials of that type are procured externally
`or manufactured in-house.
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`Type of Inventory Management
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`A material can be managed any of the following ways:
`by quantity and value
`by quantity only
`neither by quantity nor by value
`If a material is managed both by quantity and value, goods movements generally lead to updates
`of the stock quantity, the stock value, and the G/L accounts of financial accounting.
`If a material is managed by quantity only, no accounting data can be maintained in the material
`master record. In the event of a goods movement, only stock quantities are updated; the stock
`value of the material or the accounts of financial accounting and cost accounting are not updated.
`If a material is managed neither by quantity nor by value, no stocks are contained in the system
`for this material. You cannot maintain storage data in the material master record, and you cannot
`display the stocks.
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`Value Updates of Stock Accounts
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`Via the material type you can control which valuation classes are allowed and in which stock
`accounts the materials are therefore managed.
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`Units of Measure
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`The units of measure used in Inventory Management are:
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`Base Unit or Stockkeeping Unit
`
`Unit of Measure in which stocks are managed. All quantities you enter in other units are converted
`into the stockkeeping unit.
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`Unit of Entry
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`Unit of measure in which a goods movement is entered. There are the following units of entry:
`¯ stockkeeping unit
`¯ order unit - used for a goods receipt with reference to a purchase order
`¯ production unit - used for a goods receipt with reference to a production order
`¯ unit of issue - used for other goods movements
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`Order Price Unit
`
`Unit of measure (differing from the order unit) in which the vendor invoice is issued. The order
`price unit is defined in the purchase order or in the purchasing info record. If an order price unit is
`defined in the purchase order, the goods receipt must be entered both in the unit of entry and in the
`order price unit.
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`Stocks in the Material Master Record
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`For Inventory Management, it is important to know not only what quantity of a material is in a
`certain storage location or a certain plant; it is also important to know what quantities of the material
`are in what types of stock. Part of the stock may be in quality inspection, for example.
`There are various stock types. Stock types are managed at plant level and at storage-location
`level in the material master record, and they are managed for both the current period and the
`previous period. Plant stocks (except for stock in transfer and stock in transit at plant level) are
`derived from the sum of all storage location stocks.
`A description of the stock categories of the material master record follows.
`Total valuated stock Valuated stock:defined;
`Sum of all valuated stocks of a material. It consists of all the types of stock your company owns.
`Unrestricted-use stock Unrestricted-use stock:defined;
`Company’s own stock that is physically located in the warehouse, valuated, and not subject to any
`kind of usage restrictions.
`Stock in quality inspection
`Company’s own stock that is in quality inspection. Stock in quality inspection is valuated but does
`not count as unrestricted-use stock. For MRP, it is either available or not available, depending on
`how the system is set.
`Blocked stock
`Company’s own stock that should not be used. It does not count as unrestricted-use stock for
`Inventory Management and is not available for MRP.
`Blocked stock returns
`Stock that was returned by the customer and conditionally accepted. It is neither valuated nor
`does it count as unrestricted-use stock.
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`Stock in transfer
`Quantity that was already withdrawn from stock at the issuing location during a two-step stock
`transfer but that has not yet arrived at the receiving location. Stock in transfer is managed in the
`valuated stock of the receiving location, but it does not yet count as unrestricted-use stock.
`Stock in transit
`Stock in transfer that is created in the case of a stock transfer via a stock transport order.
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`Other Stocks
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`In addition to the stock types that are managed in the material master record, the system can
`display the following stocks (see Stock Display in .Lny.entory.~~,a..tj.o0). The
`following list contains various examples of these dynamically calculated stocks:
`Available stock
`Dynamic stock that is calculated by MRP (with respect to the time axis) taking any receipts, issues,
`the current unrestricted-use stocks, and - depending on how the system is set - the stocks in quality
`inspection into account.
`Reserved stock
`Sum of all quantities of a material that are reserved for withdrawal. Reserved stock is not available
`from the point of view of MRP, but for Inventory Management it still counts as unrestricted-use
`stock.
`Planned receipts
`Sum of all quantities whose receipt has been planned with reservations. Planned receipts are
`already available from the point of view of MRP, but for Inventory Management they do not yet
`count as unrestricted-use stock.
`Open purchase order quantity (total)
`Sum of all outstanding order quantities for a material. The open order quantity increases available
`stock in MRP, but it does not increase unrestricted-use stock in Inventory Management.
`Goods receipt blocked stock
`Sum of all quantities of a material that were delivered by vendors for purchase orders and that have
`been conditionally accepted. GR blocked stock is neither valuated nor does it count as
`unrestricted-use stock.
`Stock scheduled for delivery
`Sum of all current deliveries to customers for which goods issues have not yet been posted. Like
`reserved stock, stock scheduled for delivery is not available from the point of view of MRP, but it
`counts as unrestricted-use stock for Inventory Management.
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`Batch Data
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`Why Are Materials Handled in Batches?
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`The structure of the material master record allows you to manage stocks of a material by value at
`plant level or company-code level and by quantity down to storage-location level. Under certain
`conditions, you may need to make further subdivisions for a material and manage batches.
`Certain materials’ features cannot always be guaranteed to be exactly alike in production. For
`example, you cannot guarantee that a certain color will always have the same shade. Minor
`differences between production lots cannot be avoided. You need to be able to uniquely identify
`the individual production lots of the same material and manage them separately in inventory.
`Materials that require such precise identification, for example pharmaceutical products, are
`identified and managed in stock not only according to material number, but also according to batch
`number. With batch handling, you can manage as separate entities not only production lots from
`in-house ~roduction, but also production lots from vendors.
`Note
`The special features of batch handling are explained in detail in .G..oods Movemen.ts.of B.atch
`M...a..te..r.i.a.La..n..d....S.p!J.t -..v...a.!u.a.t.e.d...M...a.t.e.r.i~!~..
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`What Is a Material Handled in Batches?
`
`Before you can manage batches of a material in stock, you must first specify in the material master
`record that the material is to be managed in batches for the specified plant. To do this, you must
`set the batch management requirement indicator in the material master record (for example, in the
`Purchasing or Storage view).
`If a material is subject to management in batches, every quantity of that material must be assigned
`to a batch. Each batch of a material is identified by a unique batch number, under which it is
`managed. This number is assigned by the user (external number assignment).
`
`Structure of Batch Data
`
`For every batch, there are two types of data:
`General data of the batch (for example, shelf life expiry date, date of the last goods receipt),
`which is defined in the master batch. The master batch is created at plant level and applies to
`all storage locations of the plant in which the batch is located. No stocks are managed at this
`level.
`¯ Stock data, which is managed separately for every storage location in which the batch is
`located. For example, if a batch of a material is spread across two different storage locations in
`the plant, the stock quantity is tracked for each storage location.
`
`Must the Batch Exist Before the First Goods Receipt?
`
`Both the master batch and the stock data of the batch are created automatically during the first
`goods receipt. Thus, you do not need to create this data manually.
`If, however, you want to define specific data for a batch (such as the shelf life expiry date), you
`must maintain the batch data manually (see MM - Managing Material Master Data).
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`What Sorts of Batch Stocks Are There?
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`The following stocks are managed separately at batch level:
`¯ unrestricted-use stock
`¯ quality inspection stock
`¯ blocked stock
`¯
`stock in transfer
`¯ blocked stock returns
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`Working with Materials Handled in Batches
`
`When you enter goods movements for materials handled in batches, you must enter the batch
`number in addition to the material number. If you do not known the batch number, you can display
`a list of the available batches for a material with a help function.
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`Valuation Data
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`Why Is a Material Split-Valuated?
`
`In the material master record, one price is defined for the material per valuation area (that is, per
`plant or company code). In some cases, however, several prices might be needed within a
`valuation area for the same material, for example:
`You have a material that can either be manufactured in-house or procured externally. Stocks
`of the material that come from in-house production should be managed at one valuation price
`and on one account, while stocks procured from a vendor should be managed at another price
`and on another account.
`Your warehouse contains stocks of a certain material from different countries. Depending on
`the country of origin, different prices are valid for the material.
`You want to valuate stocks of a material differently, depending on the material’s status
`(new/used), quality, or degree of purity.
`You have a material that is handled in batches, and you want to define a separate price for
`every batch.
`In each of these cases, the material is split-valuated, that is, valuated according to different
`valuation criteria.
`Note
`Split valuation is explained in detail in the MM Materia/Va/uation Guide.
`
`What Is a Split-Valuated Material?
`
`As a prerequisite for split-valuating a material, you must mark the material as split-valuated. You
`do this in the material master record by defining a valuation category in the accounting data (for
`example, H for valuation according to origin).
`If a material is split-valuated, every quantity (sub-stock) of this material must be assigned to a
`valuation type (for example, country of origin). The valuation type is assigned by the user (external
`number assignment).
`
`Structure of Valuation Data
`
`For every valuation type, there are two types of data, as follows:
`¯ Valuation data (for example, valuation price, total stock quantity, total stock value), which is
`defined for every valuation type at valuation-area level and applies to all dependent storage
`locations.
`¯ Stock data, which, like batch data, is managed separately for each storage location. If a
`split-valuated material is subject to management in batches, its stock data is not managed per
`valuation type, but rather per batch. Every batch is assigned to a valuation type.
`The stock quantity, stock value, and valuation price for all valuation types are managed
`cumulatively at valuation-area level.
`
`Must the Valuation Type Exist Before the First Goods Receipt?
`
`You can post the goods receipt of material of a certain valuation type only if the valuation data for
`this valuation type already exists, because the system valuates the goods receipt at the price
`defined in the valuation data. On the other hand, the stock data for the valuation type is created
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`automatically during the first goods receipt into the storage location.
`
`Working with Split-Valuated Materials
`
`When you enter goods movements for split-valuated materials, you must enter the valuation type in
`addition to the material number. Enter the valuation type in the Batch field. If you do not know
`the valuation type, you can display a list of the available valuation types for a material with a help
`function.
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`Special Stocks Data
`
`Externally-owned stocks located in your company’s plant (for example, consignment stocks from
`the vendor), own stocks located externally (for example, stock of material provided to
`vendor/subcontractor, returnable packaging at customer site) as well as transaction-allocated
`stocks (sales order stock) are managed separately from normal stock.
`For these special stocks, there are separate master data in the system.
`Note
`For more information on the data structure of special stocks, see MM - Managing Special Stocks.
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`Introduction to Goods Movements
`
`Overview
`
`This section c