You will receive this message if you send a change notification after an arrival message is entered in our system for the goods, shipment or conveyance.

Contact the CBSA office of release directly to discuss how a change can be made to that transaction. Changes are handled by border services officers on a case-by-case basis.

Note: Clients can use the amend function to make post-arrival changes to highway cargo and conveyances, rail cargo and conveyances, House Bills and House Bill Close Messages. Refer to your Electronic Commerce Client Requirements Document for more information on how to use the amend function.