Diagnosis
Inbound delivery and shipment always have to be contained in the sameroute schedule, that is, they either have to both belong to a regularroute or both not belong to a regular route.

System Response
The inbound delivery cannot be added to the shipment. The action iscanceled.

Procedure
You can change the route schedule in the inbound delivery (singledialog) if goods receipt has not been posted for the inbound deliveryyet.