We currently bill service orders using DP90. They are assigned the service order in the order field. When the invoice is created, no CO-PA document is created. It is created when the order is settled with KO88. But the CO-PA characteristics are from the order and not the invoice. We lose lots of characteristic data by posting from the settlement such as billing request number, materials, etc.. Is there a way to have the invoice for service orders post to CO-PA and post to the order statistically?