Message type & is not defined

What causes this issue?

The output type &V1& is not defined here.

System Response

The entry is not accepted.

How to fix this error?

Use an output type which is assigned to the application 'Inbound
delivery' (E1) or 'Shipping' (V2). Use the F4 help for additional
support.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.