CSMS Weekly Digest: Mar 14 - Mar 20, 2026
Here's your weekly summary of 10 CSMS messages from U.S. Customs and Border Protection.
Action Required(6)
Several time-sensitive items demand attention this week, including a Jones Act waiver implementation, new ACE drawback error validations now live in CERT, and new Carnet data elements deploying to ACE Truck Manifest on March 24. Brokers should also review the updated DIS Implementation Guide and prepare for the ACE production maintenance window this weekend.
Implementation of Jones Act Waiver Issued to the Department of War, Dated March 17, 2026
On March 17, 2026, the Department of Homeland Security (DHS) issued a limited "waiver" of 46 U.S. C. § 55102 (the "Jones Act") pursuant to 46 U.S.C. § 501(a), at the request of the Department of War. ...
ACE Production Standard Invasive Maintenance from 10:00 p.m. ET Saturday, March 21, 2026, to 4:00 a.m. ET Sunday, March 22, 2026
There will be an ACE production standard invasive maintenance from 10:00 p.m. ET Saturday, March 21, 2026, to 4:00 a.m. ET Sunday, March 22, 2026.
National Marine Fisheries Service Lifts Marine Mammal Protection Act Import Restrictions for Grenada, Ireland, and New Caledonia
On March 16, 2026, The National Marine Fisheries Service (NOAA Fisheries) issued comparability findings for the fisheries of Grenada, Ireland, and New Caledonia. This action lifts the seafood import r...
New ACE Drawback Error Validations Deployed to ACE CERT Environment March 17, 2026
Two new Drawback error messages deployed to the Automated Commercial Environment (ACE) Certification (CERT) environment on Tuesday, March 17, 2026. This update supports Proclamation 10984 "Adjusting ...
Updated Document Image System (DIS) Implementation Guide is Available
U.S. Customs and Border Protection (CBP) has updated the Automated Commercial Environment (ACE) Document Image System (DIS) Implementation Guide. The updated guide is available here: ACE DIS Implement...
New Carnet Data Elements Set to Deploy in ACE Truck Manifest on March 24
On March 24, 2026, U.S. Customs and Border Protection (CBP) will enhance the Automated Commercial Environment (ACE) to enable trade users to provide ATA Carnet information as part of an electronic tru...
Policy Guidance(1)
CBP has issued guidance on implementing a Jones Act waiver granted to the Department of War dated March 17, 2026. Brokers handling affected shipments should review the waiver terms to ensure proper processing.
Pga Update(1)
NMFS has lifted MMPA import restrictions for Grenada, Ireland, and New Caledonia, meaning fish and fish products from these countries are no longer subject to those embargo conditions. Brokers importing affected commodities should update their compliance procedures accordingly.
System Update(4)
Multiple ACE changes are in flight this week, including new drawback error validations already deployed to CERT, new Carnet data elements rolling out to ACE Truck Manifest on March 24, and an updated DIS Implementation Guide. Looking ahead, ACE Manifest Modernization Release 1 is available for CERT testing and is scheduled to deploy to production on April 25.
New ACE Drawback Error Validations Deployed to ACE CERT Environment March 17, 2026
Two new Drawback error messages deployed to the Automated Commercial Environment (ACE) Certification (CERT) environment on Tuesday, March 17, 2026. This update supports Proclamation 10984 "Adjusting ...
ACE Manifest Modernization Release 1 (INT-060) is in Certification Environment for Testing and Scheduled to Deploy to Production on April 25, 2026
U.S. Customs and Border Protection is modernizing the Automated Commercial Environment (ACE) ocean, rail, and air manifest systems over several releases. The first release of this enhancement (INT-060...
Updated Document Image System (DIS) Implementation Guide is Available
U.S. Customs and Border Protection (CBP) has updated the Automated Commercial Environment (ACE) Document Image System (DIS) Implementation Guide. The updated guide is available here: ACE DIS Implement...
New Carnet Data Elements Set to Deploy in ACE Truck Manifest on March 24
On March 24, 2026, U.S. Customs and Border Protection (CBP) will enhance the Automated Commercial Environment (ACE) to enable trade users to provide ATA Carnet information as part of an electronic tru...
System Maintenance(2)
ACE production will be unavailable during standard invasive maintenance from 10:00 p.m. ET Saturday, March 21, to 4:00 a.m. ET Sunday, March 22. A separate CERT maintenance window already occurred on March 18 from 5:00–8:00 p.m. ET.
ACE Production Standard Invasive Maintenance from 10:00 p.m. ET Saturday, March 21, 2026, to 4:00 a.m. ET Sunday, March 22, 2026
There will be an ACE production standard invasive maintenance from 10:00 p.m. ET Saturday, March 21, 2026, to 4:00 a.m. ET Sunday, March 22, 2026.
ACE Certification Standard Invasive Maintenance Window on March 18, 2026 from 5:00 p.m. to 8:00 p.m. ET
There will be an ACE certification standard invasive maintenance window on March 18, 2026, from 5:00 p.m. to 8:00 p.m. ET.
General Notice(2)
CBP has cancelled all NCSD webinars scheduled for March 2026, as well as the Trade Violations webinars planned for March 31 and April 2. No rescheduling information has been announced at this time.
CBP Cancels NCSD Webinars Scheduled for March 2026
Due to the partial Department of Homeland Security (DHS) lapse in funding, U.S. Customs and Border Protection (CBP) has canceled its free monthly National Commodity Specialist Division (NCSD) commodit...
CBP Cancels Trade Violations Webinars Scheduled for March 31 and April 2
Due to the partial Department of Homeland Security (DHS) shutdown, U.S. Customs and Border Protection (CBP) has canceled its free quarterly webinars that were originally scheduled for March 31 and Apr...