For a robust instruction, the sender should gather the air waybill or cargo receipt, the shipment number, the contract of carriage and the contact details of the contractual carrier. Add the requested action, the reason for the change and the details of the proposed recipient.
Send the instruction to the contractual carrier in a traceable way. Keep confirmation of receipt, approval of costs and the actual shipment status. If the carrier rejects the instruction or cannot be reached, record the time and content of the response.
Whether an instruction is still possible depends on the carriage status and the transfer of the consignee’s right. Where the cargo value is high, damage is imminent or authority is disputed, the specific transport file should be reviewed promptly.