CSMS Weekly Digest: May 9 - May 15, 2026
Here's your weekly summary of 6 CSMS messages from U.S. Customs and Border Protection.
Action Required(4)
Plan around two ACE maintenance windows this week and update your CPSC filing procedures using the newly released Message Implementation Guide. HSU 2610 is also live, so verify your tariff schedule data is current before submitting entries.
ACE Production Standard Invasive Maintenance from 10:00 p.m. ET Saturday, May 16, 2026 to 4:00 a.m. ET Sunday, May 17, 2026
There will be ACE production standard invasive maintenance from 10:00 p.m. ET Saturday, May 16, 2026, to 4:00 a.m. ET Sunday, May 17, 2026.
Updated Consumer Product Safety Commission (CPSC) Message Implementation Guide is Now Available
An updated version of the Consumer Product Safety Commission (CPSC) Message Implementation Guide (IG) is now available and can be found in the "Draft Chapters: Future Capabilities" section of the CATA...
ACE Certification Standard Invasive Maintenance Window on May 13, 2026 from 5:00 p.m. to 8:00 p.m. ET
There will be an ACE certification standard invasive maintenance window on May 13, 2026 from 5:00 p.m. to 8:00 p.m. ET.
Harmonized System Update (HSU) 2610
Harmonized System Update (HSU) 2610 was created on May 7, 2026, and contains two harmonized tariff records and four ABI records. This HSU contains the Section 232 USMCA-Qualifying Medium-and Heavy-...
Tariff(1)
HSU 2610 has been published and may affect HTS classifications currently in use — review the update to ensure entry data remains accurate.
Pga Update(1)
CBP has released an updated CPSC Message Implementation Guide, which brokers and filers should review promptly to ensure compliance with any revised filing requirements for consumer product shipments.
System Update(1)
The ACE CATAIR Entry Summary Query (V26) has been updated to include a new liquidation reason code '36' for CAPE — update any internal systems or workflows that reference liquidation reason codes accordingly.
System Maintenance(2)
ACE Certification will be unavailable May 13 from 5:00–8:00 p.m. ET, and ACE Production will be down May 16 from 10:00 p.m. through May 17 at 4:00 a.m. ET — schedule filings and testing to avoid both windows.
ACE Production Standard Invasive Maintenance from 10:00 p.m. ET Saturday, May 16, 2026 to 4:00 a.m. ET Sunday, May 17, 2026
There will be ACE production standard invasive maintenance from 10:00 p.m. ET Saturday, May 16, 2026, to 4:00 a.m. ET Sunday, May 17, 2026.
ACE Certification Standard Invasive Maintenance Window on May 13, 2026 from 5:00 p.m. to 8:00 p.m. ET
There will be an ACE certification standard invasive maintenance window on May 13, 2026 from 5:00 p.m. to 8:00 p.m. ET.
General Notice(1)
NCSD is hosting webinars in May 2026, which may be useful for staying current on commodity classification guidance — check the full CSMS message for topics and registration details.