If our subsidiary receives goods from a customer using a return order, the will use a certain disposition code.
Then, they our subsidiary will create a purchase return order to send the goods to us (the headquarters)
Here, when we register the goods, we might use a different disposition code because the item was used and we want to credit only 80% of the value.

If this is done, the return status of the line in the original return order (in our subsidiary) is set back to "Expected" and the disposition code in this line was replaced by the value from the return order of the headquarters.