Credit management does not work with intercompany direct deliver sales orders. This functionality has not been implemented in the system. When there is credit management used in the system and a packing slip is posted for an intercompany direct delivery order, the system gives an error that the order was sent to Credit management, but it was never actually sent. It blocks both original and intercompany order from further processing. Workaround is to manually exclude original sales order from the credit management (parameter on the sales order header) every time when intercompany direct delivery is used.