Knowledge centre
Prepare your shipment and choose the right support
Short guides for people ordering port services. We explain which details to prepare, when to report a change and how registration differs from exit confirmation. We will let you know if your shipment needs any further documents or details.

Preparing and handling a shipment
What do you need for export port registration?
MRN, booking, container and terminal: prepare your Z-Nummer, BHT, WHT, Portbase or APCS/e-Desk registration enquiry and know when to ask about T1.
Booking change or roll-over: what happens to the registration?
What should you send after a booking, vessel, terminal or port change? Prepare amendment details for ZAPP, BHT, WHT, Portbase or APCS/e-Desk.
How does an MRN differ from CC599C exit confirmation?
An MRN, port registration and CC599C serve different roles in exports. Understand what they show and what to prepare when exit confirmation is missing.
Documents and specific shipment requirements
Wrong office of exit code
What to check in the declaration, route and documents before agreeing a correction.
Procedure 42 and export
How import procedure 42 differs from export and which documents need review.
Dangerous goods and MRNs
IMO/DG information, documents and terminal requirements for port handling.
More CloseMRN resources
Guides, the blog and glossary are available on the CloseMRN website.
Need to check a number or status?
Use CloseMRN validators, lookup tools and calculator.
Need help with your shipment?
Contact us about port registration, T1 or ongoing work.