An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

  1. Home
  2. Guidance
  3. ACE Imports Rail X12 - 355 Customs Acceptance/Rejection

ACE Imports Rail X12 - 355 Customs Acceptance/Rejection

Pub # 0875-0419

This page provides the message formats and technical specifications necessary to electronically transmit data to CBP's automated systems.

Attachment Ext. Size Date
ACE Imports Rail X12 - 355 Customs Acceptance/Rejection PDF 837.86 KB 06/30/2023
Last Modified: Jul 03, 2023