When we create a material master record, we must assign a material type, such as raw material or semi finished product to the material.
- In the standard system, the material type ROH (raw material) specifies that all materials of this type are procured externally.
- A material of the type NLAG (non-stock material), on the other hand, can either be procured externally or produced in-house.
The material type determines the
selection of the accounts to which postings can be made when a material moves
into or out of the warehouse or stores. In addition, the material type determines
the number range of the material number and the type of number assignment – whether
the number is assigned internally by the system or externally by the user.
Generally the material type determines
or controls the following:
Ø
The business use of the material
Ø
The type of number assignment
Ø
The data screens that are displayed and
the order in which they appear
Ø
The user department data that can or must
be entered
Ø
The procurement type of the material;
whether the material is produced in-house or procured externally or whether both are
possible
Ø
The updating of quantities and values in
the relevant valuation areas
A material type can also be assigned to a special transaction for creating material master records.
We can define attributes of material types in Customizing for Logistics - General under Material Master → Basic Settings → Material Types → Define Attributes of Material Types (OMS2).
To change the material type, on the SAP Easy Access screen, choose Logistics → Materials Management → Material Master → Material → Change Material Type (MMAM).
Note: If we notice that the wrong material type is being used for a material master record, we can still change the material type later. The prerequisite for this is that there are no stocks and no open documents for the corresponding material.
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