Return order processing for intercompany sales order with ref to billing do

Hi All,

I would like to know how to create a credit memo for intercompany sales order. with reference to billing document of the intercompany. but here i have a doubt. how to do becos there were 2 invoice involved for intercompany. 1 is normal invoice send to the customer and the 2 is the Intercompany invoice send to the ordering sales organisation.

If we create with reference to the normal invoice F2, then how will the other Invoice IV will be cancelled.

Can anyone explain me what is the correct procedure for this? how to create a return for the intercompany sales? with reference to the order or with reference to the billing document

Regards,

NJK