Cargo Systems Messaging Service

Welcome to U.S. Customs and Border Protection’s (CBP’s) Cargo Systems Messaging Service (CSMS). CSMS is one of CBP’s methods for communicating to our trade partners news and updates on our automated systems – namely the Automated Commercial Environment (ACE). To receive the CSMS messages via email, please register below.

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U.S. Customs and Border Protection updates (100 bulletins)

CSMS # 66311990 - UPDATED GUIDANCE: Payment of Duty on International Mail Shipments pursuant to Executive Order 14324 “Suspending Duty-Free De Minimis Treatment for All Countries”

• 09/22/2025 02:57 PM EDT

CSMS # 66285915 - Updates to “Bond Amount” Reporting in the K1/K2 Output Records of the Importer/Bond Query - Set to Deploy September 25, 2025

• 09/19/2025 11:42 AM EDT

CSMS # 66239933 - REMINDER - Trade Remedy Law Enforcement Directorate (TRLED) Webinar Series for Fiscal Year 2025

• 09/19/2025 09:00 AM EDT

CSMS # 66272082 - Updated ABI Software Vendor posted to CBP.gov

• 09/18/2025 09:30 AM EDT

CSMS # 66266753 - ACE Production Standard Invasive Maintenance from 10:00 p.m. ET Saturday, September 20, 2025, to 4:00 a.m. ET Sunday, September 21, 2025

• 09/18/2025 09:00 AM EDT

CSMS # 66266175 - Harmonized System Update (HSU) 2535

• 09/17/2025 04:45 PM EDT

CSMS # 66250614 - REMINDER: 2025 ACE User Satisfaction Survey Closes Today

• 09/16/2025 12:10 PM EDT

CSMS # 66249610 - ACE Certification Standard Invasive Maintenance Window on September 17, 2025 from 5:00 p.m. ET to 8:00 p.m. ET

• 09/16/2025 10:53 AM EDT

CSMS # 66242844 - Updated Guidance - Implementation of the United States-Japan Agreement and Modification of Duties on Imports from Japan

• 09/15/2025 05:55 PM EDT

CSMS # 66170110 - Information on Customs Broker Permit User Fee Changes Effective October 1, 2025

• 09/15/2025 09:00 AM EDT

CSMS # 66224692 - Resolved - ACE DIS: Document Image System Email Response Delay Issue

• 09/13/2025 04:58 PM EDT

CSMS # 66218283 - ACE DIS: Document Image System Email Response Delay Issue

• 09/12/2025 05:53 PM EDT

CSMS # 66216857 - UPDATE: Additional Parties Qualified for the Payment of Duty on International Mail Shipments Pursuant to Executive Order 14324 “Suspending Duty-Free De Minimis Treatment for All Countries”

• 09/12/2025 03:39 PM EDT

CSMS # 66216037 - DEADLINE EXTENDED: 2025 ACE User Satisfaction Survey Closes Tuesday, September 16

• 09/12/2025 03:03 PM EDT

CSMS # 66215281 - Guidance: QB 25-222 2026 Mixes and Doughs

• 09/12/2025 01:26 PM EDT

CSMS # 66215313 - Guidance: QB 25-215 2026 Cocoa Powder

• 09/12/2025 01:16 PM EDT

CSMS # 66213957 - Automated Rejection of Manifest Filings with Insufficient Cargo Information Enhancement Deploying September 27, 2025

• 09/12/2025 11:45 AM EDT

CSMS # 66212313 - FDA Downtime September 13, 2025, 10:00 p.m. ET through September 14, 2025, 6:00 a.m. ET

• 09/12/2025 09:40 AM EDT

CSMS # 66205379 - CORRECTION: ACE Drawback Error Code Changes Set to Deploy September 16

• 09/11/2025 03:55 PM EDT

CSMS # 66204544 - REMINDER: 2025 ACE User Satisfaction Survey Closes Tomorrow, September 12

• 09/11/2025 03:11 PM EDT

CSMS # 66204518 - Update to Automated Export System (AES) Appendix F – New Department of Commerce/Bureau of Industry and Security (BIS) License Type Code C78

• 09/11/2025 02:56 PM EDT

CSMS # 66202246 - ACE Collections: Check Reduction for Bill Payments (Public Form) ─ Phase 1: Public Pay.gov Online Bill Pay Form

• 09/11/2025 12:09 PM EDT

CSMS # 66201553 - ACE Production Standard Invasive Maintenance from 10:00 p.m. ET Saturday, September 13, 2025, to 4:00 a.m. ET Sunday, September 14, 2025

• 09/11/2025 11:06 AM EDT

CSMS # 66200760 - Updated Guidance: Resubmission Timeframe for Rejected Entry Summaries with Trade Remedy Duties

• 09/11/2025 10:16 AM EDT

CSMS # 66192045 - REMINDER: ACE Drawback Error Code Changes Set to Deploy September 16

• 09/10/2025 02:08 PM EDT

CSMS # 66181492 - Updated ACE Cargo Release Condition Codes Document

• 09/09/2025 04:27 PM EDT

CSMS # 66180528 - ACE Certification Standard Invasive Maintenance Window on September 10, 2025, from 5:00 p.m. to 8:00 p.m. ET

• 09/09/2025 02:53 PM EDT

CSMS # 66176703 - Information: QB 25-221 2026 Mixed Condiments and Mixed Seasonings

• 09/09/2025 10:02 AM EDT

REMINDER: Next ACE Reports Webinar Set for Tomorrow, September 10

• 09/09/2025 09:22 AM EDT

CSMS # 66167619 - ACE CATAIR Entry Summary Create/Update V107 Updated: User Fee Accounting Class Code 500 and Global Business Identifier (GBI) Notes Updates

• 09/08/2025 01:37 PM EDT

CSMS # 66151866 - UPDATE – Products Exempted from Reciprocal Tariffs

• 09/06/2025 03:24 PM EDT

CSMS # 66146676 - INTERIM GUIDANCE: Retroactive Implementation of the United States-Japan Agreement

• 09/05/2025 07:53 PM EDT

CSMS # 66126860 - ACE Production Standard Invasive Maintenance from 10:00 p.m. ET Saturday, September 6, 2025, to 4:00 a.m. ET Sunday, September 7, 2025

• 09/04/2025 10:20 AM EDT

CSMS # 66117093 - Update to the Automated Export System Trade Interface Requirements – Appendix X — HTS Codes for PGAs – DEA Drug Code

• 09/03/2025 01:33 PM EDT

CSMS # 66114170 - REMINDER: The 2025 ACE User Satisfaction Survey is Now Open!

• 09/03/2025 10:06 AM EDT

CSMS # 66107290 - REMINDER: The Production Deployment Date for SO70 and WO70 Updates Is September 6, 2025

• 09/02/2025 04:44 PM EDT

CSMS # 66104472 - ACE Certification Standard Invasive Maintenance Window from 5:00 pm to 8:00 pm ET on September 03, 2025

• 09/02/2025 01:05 PM EDT

CSMS # 66077997 - GUIDANCE: Extension of Section 301 China Product Exclusions

• 08/29/2025 05:30 PM EDT

CSMS # 66075832 - Harmonized System Update (HSU) 2534

• 08/29/2025 02:20 PM EDT

CSMS # 66075685 - Updated ACE Development and Deployment Schedule Posted to CBP.gov/ACE

• 08/29/2025 02:13 PM EDT

CSMS # 66065494 - GUIDANCE: Suspension of Duty-Free De Minimis Treatment for All Countries

• 08/28/2025 04:45 PM EDT

CSMS # 66063879 - Updated ACE CATAIR Entry Summary Create/Update v106: FY26 Customs User Fees

• 08/28/2025 02:23 PM EDT

CSMS # 66062800 - UPDATE: Additional Parties Qualified for the Payment of Duty on International Mail Shipments pursuant to Executive Order 14324 “Suspending Duty-Free De Minimis Treatment for All Countries”

• 08/28/2025 01:55 PM EDT

CSMS # 66062460 - Information: QB 25-406 2026 Cotton Note 10

• 08/28/2025 12:55 PM EDT

CSMS # 66060610 - Information: QB 25-401 2026 Cotton Note 5

• 08/28/2025 10:25 AM EDT

CSMS # 66060558 - Information: QB 25-405 2026 Cotton Note 9

• 08/28/2025 10:17 AM EDT

CSMS # 66052381 - Production (PROD) Deployment of Error Code Message

• 08/27/2025 04:06 PM EDT

CSMS # 66038438 - ACE Certification Standard Invasive Maintenance Window from 5:00 pm to 8:00 pm ET on August 27, 2025

• 08/26/2025 04:47 PM EDT

CSMS # 66037537 - Harmonized System Update (HSU) 2533

• 08/26/2025 03:17 PM EDT

CSMS # 66037159 - Information: September 13, 2025, Quota opening: QB 25-502 2026 Tobacco

• 08/26/2025 02:50 PM EDT

CSMS # 66035043 - The 2025 ACE User Satisfaction Survey is Now Open!

• 08/26/2025 12:46 PM EDT

CSMS # 66034706 - REMINDER: Next ACE Reports Webinar Set for September 10

• 08/26/2025 12:25 PM EDT

CSMS # 66033571 - UPDATE: Additional Parties Qualified for the Payment of Duty on International Mail Shipments pursuant to Executive Order 14324 “Suspending Duty-Free De Minimis Treatment for All Countries”

• 08/26/2025 11:14 AM EDT

CSMS # 66033420 - Information: October 1, 2025, Quota opening: QB 25-304 2026 Sugar Containing Products

• 08/26/2025 10:59 AM EDT

CSMS # 66033326 - INFORMATION: October 1, 2025, Quota Opening: QB 25-303 2026 Raw Sugar Cane Allocations

• 08/26/2025 10:38 AM EDT

CSMS # 66033271 - Information: October 1, 2025, Quota opening: QB 25-301 2026 Refined Sugar

• 08/26/2025 10:29 AM EDT

CSMS # 66033039 - Information: October 1, 2025, Quota opening: QB 25-305 2026 Specialty Sugar

• 08/26/2025 10:23 AM EDT

CSMS # 66027027 - Guidance-Additional Duties on Imports from India

• 08/25/2025 05:46 PM EDT

CSMS # 66026456 - Production (PROD) Deployment of Error Code Message

• 08/25/2025 04:57 PM EDT

CSMS # 66024698 - Updated ACE Air CAMIR Appendix A: Codes Posted on CBP.gov

• 08/25/2025 02:13 PM EDT

CSMS # 66024069 - Auto-Rejection of Insufficient Cargo Description Shipper/Consignee Enhancement Release to ACE CERT Environment Today

• 08/25/2025 01:16 PM EDT

CSMS # 66002708 - Updated De Minimis Frequently Asked Questions (FAQs)

• 08/22/2025 05:05 PM EDT

CSMS # 66002597 - Customs Bonded Facility Violations

• 08/22/2025 04:31 PM EDT

CSMS # 65986666 - Trade Remedy Law Enforcement Directorate (TRLED) Webinar Series for Fiscal Year 2025

• 08/22/2025 09:00 AM EDT

CSMS # 65990849 - Initiation of Antidumping and Countervailing Duty Investigations: Unwrought Palladium from Russian Federation (Russia)

• 08/21/2025 03:51 PM EDT

CSMS # 65990438 - ACE Production Standard Invasive Maintenance from 10:00 p.m. ET Saturday, August 23, 2025, to 4:00 a.m. ET Sunday, August 24, 2025

• 08/21/2025 03:13 PM EDT

CSMS # 65990231 - Parties Qualified for the Payment of Duty on International Mail Shipments pursuant to Executive Order 14324 “Suspending Duty-Free De Minimis Treatment for All Countries

• 08/21/2025 02:59 PM EDT

CSMS # 65974634 - Finalize Tuna Warehouse Withdrawals 2025

• 08/20/2025 10:28 AM EDT

CSMS # 65974470 - Updated Cargo Release Status Notification Documents Have Been Posted to cbp.gov

• 08/20/2025 09:52 AM EDT

CSMS # 65968120 - Initiation of Antidumping and Countervailing Duty Investigations: Certain Freight Rail Couplers and Parts Thereof from Czech Republic and India

• 08/19/2025 03:45 PM EDT

CSMS # 65964586 - Update to the Automated Export System Trade Interface Requirements – Appendix X — HTS Codes for PGAs

• 08/19/2025 11:07 AM EDT

CSMS # 65962695 - ACE Certification Extended Invasive Maintenance Window – August 20, 2025

• 08/19/2025 09:15 AM EDT

CSMS # 65953702 - Harmonized System Update (HSU) 2532

• 08/18/2025 11:58 AM EDT

CSMS # 65952024 - ACE Certification Environment – Extended Invasive Maintenance Window August 18, 2025

• 08/18/2025 09:36 AM EDT

CSMS # 65936570 - GUIDANCE: Section 232 Additional Steel Derivative Tariff Inclusion Products

• 08/15/2025 07:26 PM EDT

CSMS # 65936615 - GUIDANCE: Section 232 Additional Aluminum Derivative Tariff Inclusion Products

• 08/15/2025 07:26 PM EDT

CSMS # 65934463 - GUIDANCE: Payment of Duty on International Mail Shipments pursuant to Executive Order 14324 “Suspending Duty-Free De Minimis Treatment for All Countries”

• 08/15/2025 03:11 PM EDT

CSMS # 65932593 - New ACE Drawback Error Validations Set to Deploy to CERT August 16, 2025

• 08/15/2025 12:22 PM EDT

CSMS # 65921586 - ACE Production Standard Invasive Maintenance from 10:00 p.m. ET Saturday, August 16, 2025, to 4:00 a.m. ET Sunday, August 17, 2025

• 08/14/2025 12:01 PM EDT

CSMS # 65913540 - Version 34 of the Drawback Error Dictionary Posted to CBP.gov

• 08/13/2025 03:25 PM EDT

CSMS # 65913081 - ACE CATAIR Entry Summary Create/Update v106 Updated: FY26 Custom User Fees

• 08/13/2025 03:17 PM EDT

CSMS # 65903569 - ACE Certification Environment - Extended Invasive Maintenance Window August 13, 2025

• 08/12/2025 04:54 PM EDT

CSMS # 65894387 - UPDATE – Reciprocal Tariff Rate for China

• 08/11/2025 09:03 PM EDT

CSMS # 65892831 - ACE Cargo Release Certification (CERT) Deployment of Error Code Message

• 08/11/2025 05:25 PM EDT

CSMS # 65890446 - REMINDER: CBP will deploy the third release of the Section 321 – Does Not Exceed $800 in Aggregated Shipments enhancement to PROD on August 12, 2025

• 08/11/2025 03:28 PM EDT

CSMS # 65870314 - NCSD September 2025 Webinars

• 08/08/2025 03:11 PM EDT

CSMS # 65868872 - Tariff flagging updates for the Environmental Protection Agency (EPA)

• 08/08/2025 01:22 PM EDT

CSMS # 65860542 - Updated Cargo Release Condition Codes document has been posted to cbp.gov

• 08/07/2025 04:47 PM EDT

CSMS # 65845565 - Modernized ACE Portal Broker Management Functionality Updates Successful

• 08/06/2025 10:44 AM EDT

CSMS # 65845401 - Harmonized System Update (HSU) 2530 and 2531

• 08/06/2025 10:17 AM EDT

CSMS # 65840020 - ACE Production Standard Invasive Maintenance from 10:00 p.m. ET Saturday, August 09, 2025, to 4:00 a.m. ET Sunday, August 10, 2025

• 08/06/2025 09:00 AM EDT

CSMS # 65835569 - ACE Certification Standard Invasive Maintenance Window on August 06, 2025, from 5:00 pm to 8:00 pm ET

• 08/05/2025 11:19 AM EDT

CSMS # 65829726 - GUIDANCE: Reciprocal Tariff Updates Effective August 7, 2025

• 08/04/2025 06:13 PM EDT

CSMS # 65828194 - Broker Management Functionality Unavailable during ACE Portal Update on August 5, 2025, 8:00 p.m. ET

• 08/04/2025 03:37 PM EDT

CSMS # 65825646 - Harmonized System Update (HSU) 2529

• 08/04/2025 12:01 PM EDT

CSMS # 65807735 - GUIDANCE – Additional Duties on Imports from Brazil

• 08/01/2025 06:32 PM EDT

CSMS # 65798609 - Update - Additional Duties on Imports from Canada

• 07/31/2025 10:19 PM EDT

CSMS # 65794272 - GUIDANCE: Section 232 Import Duties on Copper and Copper Derivative Products

• 07/31/2025 02:07 PM EDT

CSMS # 65791256 - ACE Production Standard Invasive Maintenance from 10:00 p.m. ET Saturday, August 02, 2025, to 4:00 a.m. ET Sunday, August 03, 2025

• 07/31/2025 10:09 AM EDT

CSMS # 65783625 - Updated Draft ACE Cargo Release CATAIR Posted to CBP.gov

• 07/30/2025 02:41 PM EDT

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These documents may qualify as a “guidance document” as set forth in Executive Order 13891 and interpretations thereof; such guidance documents are not binding and lack the force and effect of law, except as authorized by law or as incorporated into a contract. These documents are being posted to this portal to provide stakeholders with useful information.

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