What is the use of usage in item category determination?

Question

Hi Gurus,
What is the use of usage in item category determination? pls give examples.
Thanks,
Paul

Answer 1

Hi John,
Assign Item Categories
In this menu option, you can specify which item categories the system proposes during document processing for each sales document type and item category group. At the same time, you can specify additional item categories with which the system default can be overwritten. There is a maximum of three possible alternative item categories.
If, for example, you enter a material with the item category group NORM in a standard order, the SAP System determines the allowed item category via the assignment of item categories to sales document types and item category groups.
The system default and the allowed alternatives are always determined from the sales document type and one or two further criteria. The system default depends on the following criteria:
sales document type
item category group
item category of the higher-level item
item category usage
Note
The SAP System automatically copies the item category determined for a sales document item to the delivery.
Recommendation
Depending on the initial situation you can start the assignment differently:
When you define a new sales document type, you should specify the proposed and the allowed item categories for the materials that are represented by the item category group.
When you define a new item category, you should specify for which sales document types an item category is proposed or which item category is possible for the materials represented by the item category group.
When you define a new item category group, you are to enhance the assignment of item categories to sales document types by this new item category group.
Actions
To define item category determination, proceed, for example, as follows:
1. Choose the sales document type to which you want to assign item categories.
2. Then choose one of the item category groups.
3. Specify all the allowed item categories for the combination of sales document type and item category group.
If you are dealing with a non-material item, you must specify the corresponding item usage.
If it is a subitem, specify the item category of the higher-level item.
If it is an item category that is to be proposed in the sales document, you must indicate the combination of item category, item category group and sales document type as a default value.
4. If necessary, specify between one and a maximum of three item categories, with which the system default can be manually overwritten during document processing.
Thanks & Regards
Sasikanth.Ch