Partial reutrns of Components in Variant configuration

Hello

This is a Make to order proces.. as off now we are creating the sales order for the whole product(example: CAR)

The sales orde rhas been created for CAR

And now the customer want to retiurn the tool kit in the car, which he was not intrested in using it.

How can we create the return order for the sales order BOM, this item (tool kit) is a sub component of the main item CAr.

The return document must be referrence to the orginal sales order, but it must not copy the whole iteam only the sub compnent must be copied.

Regard

CSN