
300 Reservation (Booking Request) (Ocean)
Maersk’s published 300 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 300
Paste or upload a document and check it against Maersk’s published rules — segment order and repetition, required elements, field lengths, data types and accepted codes. Nothing is stored.
Go live on Maersk’s 300 in days, not months
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