CBP added automated ACE alerts for container seal changes on ocean and rail shipments
CBP title: Automated Transmission of Container Seal Changes to ACE Manifest for Ocean and Rail Shipments – UPDATED Trade Information Notice Now Available
This message is from April 3, 2026. Later CSMS messages may have changed it. See the latest trade news
What did CBP announce?
CBP announced an updated Trade Information Notice describing new ACE features for container seal changes on ocean and rail shipments. The update added disposition codes so ACE notifies carriers by EDI when CBP personnel add or remove container seals, and let ABI filers query D2/D3 notification records for a bill of lading. CBP deployed these features to the ACE production environment on April 9, 2026.
What is Allied's position?
This update concerns ACE system notifications for carriers and ABI filers, not entry filing requirements. We use these ACE features when reviewing bill of lading records for shipments we handle, but clients do not need to take any action. Clients with questions about a specific shipment's seal status should ask us to check the ACE record.
General information, not legal advice.
What does the CBP message say?
U.S. Customs and Border Protection (CBP) published an updated version of the Automated Transmission of Container Seal Changes to ACE Manifest Trade Information Notice here (https://www.cbp.gov/document/guidance/trade-information-notice-automated-transmission-container-seal-changes-ace).
The updated notice includes an additional feature to be deployed to the Automated Commercial Environment (ACE) production (PROD) environment to notify trade users when CBP personnel add or remove container for ocean and rail shipments. The deployment will include:
• New disposition codes to enable ACE to automatically notify carriers via Electronic Data Interchange (EDI) when CBP personnel add or remove container seals for ocean and rail shipments.
• (NEW) Automated Broker Interface (ABI) filers can query a record of D2/D3 notifications for a bill of lading to determine if container seals have been added and/or removed by CBP, including viewing new container and seal numbers.
These updates are currently available in the ACE CERT environment for testing and will be deployed to the ACE production (PROD) environment on April 9, 2026.
For questions about this deployment, contact CREM@cbp.dhs.gov (mailto:CREM@cbp.dhs.gov).
For technical questions, contact your assigned Client Representative, or the ACE Account Service Desk (ASD) at 866-530-4172 or ace.support@cbp.dhs.gov (mailto:ace.support@cbp.dhs.gov).
Related Message Number(s): CSMS # 67119869 - Updates to ACE CAMIR ACE Ocean/Rail Import Manifest Appendix D