ARTICLE CREATION-CLARIFICATION

Hi to all,

I need a small clarification on following information.

When we use T.code MM41 for article creation system will show the following things like,article,article type,mc category,article category.

+

Area's of validity

purchasing org

vendor

vendor subrange

sales org

dis,, channel

dis,,center

store

what is the need for this data i.e Area's of validity.