Packaging material type & not maintained for means of transport &

What causes this issue?

In the material master there is no <DS:DE.VHART>packaging material type
</> &V1& maintained for the material (<DS:DE.TRMTYP>means of transport
</>) &V2&.

System Response

The system does not allow use of the means of transport entered.

How to fix this error?

Enter a means of transport that has an appropriate packaging material
type assigned to it.

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.