CBP updated technical guide for truck export manifest acceptance messages
CBP title: Update to Electronic Export Manifest (EEM) – Truck Manifest Implementation Guide (IG) 355 Acceptance/Rejection Message
This message is from March 5, 2026. Later CSMS messages may have changed it. See the latest trade news
What did CBP announce?
CBP announced updates to the Electronic Export Manifest Truck X12-355 Acceptance/Rejection Message Implementation Guide. The changes corrected a typo and reduced the maximum use counts in the REF and VEH segments to one. CBP directed technical questions to client representatives and policy questions to its export manifest mailbox.
What is Allied's position?
This update concerns the technical data format for electronic export manifests filed by truck carriers, not the import entries Allied files for clients. It does not change any import entry, classification, or duty requirement. Clients do not need to take any action.
General information, not legal advice.
What does the CBP message say?
U.S. Customs and Border Protection has updated the Electronic Export Manifest (EEM) Automated Commercial Environment (ACE) Exports Truck X12- 355 Acceptance/Rejection Message Implementation Guide (IG).
Updates implemented:
- Typo updated from DM02 to DMG02
- Max Use in REF segment updated from 10 to 1
- Max Use in VEH segment updated from 10 to 1
For questions:
- Technical inquiries should be directed to your assigned CBP Client Representative.
- Policy inquiries may be submitted to cbpexportmanifest@cbp.dhs.gov (mailto:cbpexportmanifest@cbp.dhs.gov).