
404 Rail Carrier Shipment Information
Canadian National Railway (CN Rail)’s published 404 specification, rendered as an interactive guide. Expand any segment to see its elements, data types, lengths and accepted codes — then validate your own document against it below.
Specification
Validate a 404
Paste or upload a document and check it against Canadian National Railway (CN Rail)’s published rules — segment order and repetition, required elements, field lengths, data types and accepted codes. Nothing is stored.
Go live on Canadian National Railway (CN Rail)’s 404 in days, not months
Weredi maps this guide to your ERP, runs the test cycle with Canadian National Railway (CN Rail), and keeps the spec current as it changes.