SAP MM Configuration Step 2: Material Master - Introduction

Material Master - Introduction

The material master is the starting point for the rest of the modules.

What Material Types are there?

The material types that you use are configured in Customizing for the Material Master under

Logistics Master Data : Material Master -> Material -> Control data -> Define material type attributes.

The following list shows you the material types contained, for example, in the standard SAP R/3 System, and what their different roles are:

DIEN (services)
Services are procured externally and cannot be stored. A material master record of this material type can always contain purchasing data.

FERT (finished products)
Finished products are produced by the company itself. Since they cannot be ordered by Purchasing, a material master record of this material type does not contain purchasing data.

FHMI (production resources/tools)
Production resources/tools are procured externally and used in the manufacture of products. A material master record of this material type can contain purchasing data, but no sales data. It is managed on a quantity basis. Examples of production resources/tools are apparatus, equipment, and measuring and testing devices.

HALB (semifinished products)
Semifinished products can be procured externally (sub-contracting) as well as manufactured in-house. They are then processed by the company. A material master record of this material type can contain both purchasing and work scheduling data.

HAWA (trading goods)
Trading goods are always procured externally and then sold. A material master record of this material type can contain purchasing and sales data.

HIBE (operating supplies)
Operating supplies are procured externally and required for the manufacture of other products. A material master record of this material type can contain purchasing data but no sales data.

NLAG (non-stock material)
Non-stock material is material that is not held in stock because it is consumed immediately. (Office supplies such as stationary. You need to create purchase order and accounting document for payment but the stock balance is always zero as it is issued out immediately to the various department.)

ROH (raw materials)
Raw materials are always procured externally and then processed. Since raw materials cannot be sold, a material master record of this material type contains no sales data.

UNBW (non-valuated materials)
Non-valuated materials are managed on a quantity basis, but not by value.

VERP (packaging materials)
Packaging materials are used to transport goods and come with the goods free of charge. A material master record of this material type is managed both on a quantity basis and by value.

WETT (competitive products)
Competitive products have their own material master records created from the Basic Data view. The competitor's number, which is stored in the material master record, assigns the material to a particular competitor.

Maintain the Material Type

OMS2 - Material Type Maintenance - Create/Change/Display

Steps:-

• transaction OMS2
• click Change
• key in the Material Type you want to change e.g. FERT then hit enter

The Views belows allows you to choose the Views for each Material Type.
(Press the Page up/Page Down keys to scroll the views)

If you tried to change from FERT to HAWA in 4.6x, you will receive an error message :-
The material type cannot be changed. This is not allowed if only external procurement is defined for the new material type, or if the new material type has a different account category reference than the old material type.

To overcome it, goto OMS2 and change the HAWA material type.
In the Internal/external purchase orders sections:
Original Changes
Ext. purchase orders 2 1
Int. purchase orders 0 1

Screens in Material Master

• MM01 - Create, MM02 - Change, MM03 - Display and MM06 - Flag for deletion.
• MM04 - Display the changes done to the material master.
• MMAM - Change the Material Type. for e.g. from FERT to HALB

Configure the Material Master Screen MM01 / MM02 / MM03

OMSR - Assign the field to the field group
OMS9 - Maintain the data screen field

Unit of Measure

In the material master, there is a Units of measure button for users to store in the different conversion rate. This sample program (ZUNT) extract the data from the unit of measure conversion table.

In the Material Master the moving average price are affected by:-

• Goods Receipt for Purchase Orders
• Transfer from Plant to Plant
• Invoice Receipt
• Settlement
• Price Change

Common configuration changes-

• define new material group (OMSF)
• define new valuation class (OMSK) and automatic posting (OBYC)
• define new material account assignment group (transaction OVK5) and

Customer/Material/Account keys (transaction VKOA)

Block materials from inventory posting

After blocking, when the user do a inventory posting, they will get this error message :-

E: Material xxxxx has status Blocked for procmnt/whse