No route found for document &1

What causes this issue?

You must specify the route for the dangerous goods transport in order to
select the valid dangerous goods data. However, for document &V1&,
either no route could be found, or the route entered in document &V1&
does not exist in the system (Customizing table).

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check if the document has been allocated a route that exists in the
system. If necessary, allocate a route.

Error message extract from SAP system. Copyright SAP SE.