Sales Set creation

Dear Gurus,

I think I created a Sales Set using MM41 correctly

Example:

Item – Description – Article Type – Article Category

2001       Mat1                     HAWA                   Sales Set

1002       Mat2                     HAWA                   Single

1003       Mat3                     HAWA                   Single

1004       Mat4                     HAWA                   Single

I add the article 1002 to1004 as a component of item 2001 in MGW0

My Scenario:

I want to purchase items 1002 to 1004 by using only the article no.2001 in a normal Purchase Order (NB)

I tried but the component is not exploding and one thing more when I
receive the material (MIGO) the stock only goes to Article no.2001.

Am I doing correctly? Can anybody help me on this?

Regards,

Ber (New)