CSMS # 69129195 - ACE Unplanned Outage

U.S. Customs and Border Protection sent this bulletin at 07/02/2026 06:45 PM EDT

ACE System will be down for maintenance from 7:00p to approx. 9:00p ET to address performance issues.

This will impact the following apps:
- Multi-Modal Manifest (MMM) User Interface
- Air/Ocean/Rail EDI
- Truck Manifest Mod (TMM)
- Mod ACE Portal Access
- Cargo Release
- Entry Summary

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This service is provided to you at no charge by U.S. Customs and Border Protection.

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