Means of transport created for shipment. Check shipment

What causes this issue?

A means of transport was automatically created for the shipment.

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 whether other means of transport have been created for this
shipment already. These will not be removed from the shipment
automatically.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.