International Shipment Requirements

Incident Report for ShipStation

Monitoring

To comply with new customs regulations, carriers, including USPS and others, are now requiring six-digit Harmonized System (HS) codes on all international commercial shipments.

Effective September 1, 2025, shipments without these codes may be delayed or rejected by customs authorities.

Posted Aug 25, 2025 - 16:48 CDT

This incident affects: ShipStation.