SAP Message VW210 - & shipment(s) could not be refreshed

Diagnosis
The system tried to copy shipments changed by you from the database, in
order to be able to display the list in its most up-to-date form. This
could not be completely carried out, as one or more of the shipments
are blocked. The block may due to the posting of your changes being
delayed. In this case you can view the data by using the refresh
function again, once posting is completed.