SAP Message XS808 - No delivery to &, as no route known

Diagnosis
The message could not be delivered to recipient &V1& as no route tothis recipient was found.

System Response
Processing was ended normally.
Additional information of the node used (in the system language of thenode, possibly with recommended address):
V4

Procedure
Check the recipient address, the routing configuration of SAPconnectand the routing configuration of the node or communication systemselected. You may need to make some changes here.