Prior to load of transport unit & on shipment & already archived.

What causes this issue?

Previous shipment already archived. Prior to load and left on vehicle
of tranport unit are not changeable anymore.

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?

Prior to load must not be specified anymore.
In case of correction please confirm the load from the intransit
storage location directly.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.