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Spotlight PEPPOL BIS Billing 3.0 The EU e-invoicing mandate is here — France Sept 2026, Belgium Jan 2026, Germany 2025.

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Foundations

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Standards

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Tools

X12 358 — Customs Consist Information

The 358 transmits the detailed consist of a train to a customs border crossing: each wagon, container, and trailer present in the composition.

Purpose

The 358 is used on transborder rail flows US-Canada (CSX, NS, CN, CPKC) and US-Mexico (KCS, FXE): it carries the complete consist of the train arriving at the border, segmented by wagon and by unit (container, trailer, autorack), with BL references, shipper / consignee, commodities.

It is part of the ACE program for rail. Acknowledged by 997 and by 355. Typically preceded by a 309 for each contained BL, the 358 is the final presentation instrument at the border.

Envelope structure

The 358 travels within the three X12 envelope levels (ISA/IEA, GS/GE with functional group CC, and ST/SE). Didactic example in release 004010:

x12 example-358.x12 
ISA*00*          *00*          *ZZ*CNRAIL        *ZZ*USCBPACE       *260514*1600*U*00401*000000358*0*P*>~
GS*CC*CNRAIL*USCBPACE*20260514*1600*1*X*004010~
ST*358*0001~
M10*CANADIAN NATIONAL*B*9876543*US BOUND*TRAIN-1234*R*20260514~
P4*USMSP*20260520~
LX*1~
N7*CNTX*8821095*A402~
N9*BM*BL-2026-CN-0098~
LX*2~
N7*CNTX*8821096*A402~
N9*BM*BL-2026-CN-0099~
SE*9*0001~
GE*1*1~
IEA*1*000000358~

Common segments

  • Header — ST, M10 (mode R = Rail), P4 (border Port).
  • Consist — repeated LX loop per wagon: N7 (Equipment), N9*BM (BL contained in this wagon).
  • Sub-wagons — if a wagon carries several containers (e.g., double-stack), a sub-loop documents each unit.
  • Shipper / Consignee — N1*SH/N1*CN may be at train level or per BL.
  • Summary — SE.

Common pitfalls

  • Order of presentation: the consist must follow physical train order (head end to rear), not alphabetical; a CBP officer inspecting a specific wagon has no chance to find it without physical order.
  • Pre-arrival timing: the 358 must be filed pre-arrival with delay varying by mode (1h before for US-Canada rail per ACE rules); a late filing triggers hold or crossing refusal.
  • Empty cars: a train with empty wagons must include them even without BL; a truncated consist does not match the physical count and triggers an audit.

Documentation

The code 358 and the name Customs Consist Information are public and listed on x12.org/products/transaction-sets. The complete structure of loops, qualifiers and code lists is distributed by DISA via the proprietary Implementation Guides (TR3). ediverse.io covers only public concepts, the envelope and didactic examples.