Please check the following discussion
What I understand is that COPA entry is only with VA88 where there is 'Product Cost By SAles Order" .
Where there is no sales order costing but Production Order is the cost object and the sequence is Sales Order -> MRP Run - > Planned Order - > Production Order we are doing CO88. In this case is COPA document is created at Billing?
Is it different with Process Orders and production Orders????/