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Monday Morning eBriefing

Next Deployment of ACE Truck Manifest Modernization June 5

May 30, 2022 by Luke Zimmer
Customs and Border Protection (CBP) will launch Phase 2 of the ACE Truck Manifest Modernization (TMM) on June 5. Specifically, this phase of the implementation will focus on enhancing the CBP user interface (UI) for the primary and secondary processing of truck manifests.

“As part of this deployment, previously relaxed validations in the legacy truck manifest application are now supported in TMM and may result in errors for some trade users,” CBP said in a May 24 message to the trade.
To prepare for the upcoming deployments and avoid potential errors, CBP asked the industry to review the validations documented in the Truck Manifest X.12 - 309 and EDIFACT CUSCAR EDI implementation guides here.

On Jan. 30, 2022, CBP started the multi-release deployment of Enhancements to ACE Truck Manifest – Phase 2. The following deployments are now complete:

  • Brownsville, TX – Jan. 31
  • Buffalo, NY – March 13
  • Laredo, TX – April 24 
  • Detroit, MI – May 15
The following schedule reflects the remaining deployment schedule for TMM Phase 2:

  • June 5 – All remaining ports
  • Retire legacy truck manifest application (R4): June 20, 2022
In addition, CBP is preparing for the deployment of Enhancements to ACE Truck Manifest – Phase 3, which will finalize the modernization of ACE truck manifest functionality and will complete all backend services used for EDI processing.

“Implementing the capabilities developed in Phase 2, deployment of Phase 3 enhancements will provide trade users with new messaging regarding modifications to Crew, Vehicle, Cargo and Seals,” CBP said.

Phase 3 deployment is currently set for July 11, 2022. More information on Phase 3 enhancements is available in the ACE Truck Manifest: Draft Chapters for Future Use implementation guides.
For questions about TMM and the upcoming deployments, contact For issues with truck manifest EDI functionality, contact your client representatives.