Program to upload Material Master Data

Hi,

My query is,

I want to extend my material through MM02,

i want to select Sales Org Data 2

then i will enter plant, Sales Org, Division

There is field in the view i.e Material Group 1 to 5. (MVKE-MVGR1 to MVGR5)

I want abaper to create program for this through BAPI,

Plz explain me what logic should i give it to him

waiting for your reply.

I have BAPI i.e BAPI_MATERIAL_SAVEDATA

if any other is there relevant to my query plz tell.

Thanks