Link document to salesorder

Hi,

i created a document and linked it to the materialmaster. (CV01N, MM02).

While creating a new sales order for the material i want that

sap creates a link between the document which is attached to the materialmaster

and the salesorder im creating.

Is this possible?

how? with customizing?

if not, does somebody has an idea how to solve this via userexits?

We need our product informations of the DVS in our order confirmation

and further in the deliverynote, attached as pdf.

help apprechiated!

thanks, regards.