CSMS 51883317·Operational·May 13, 2022·View on csms.cbp.gov ↗

Secure File Transport Protocol (SFTP) Connections for CBP Automated Systems

Plain-English explanation

CSMS 51883317 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on May 13, 2022. It carries the official CBP guidance brokers and importers must follow for the topic — "Secure File Transport Protocol (SFTP) Connections for CBP Automated Systems". CSMS messages are the operational layer between Commerce determinations and at-the-border collections: when Commerce publishes a new rate, scope ruling, or instruction, CBP turns it into a CSMS that ACE/ACS systems and brokers act on.

Message body

Full text as published by U.S. Customs and Border Protection

CSMS #51883317 - Secure File Transport Protocol (SFTP) Connections for CBP Automated Systems U.S. Customs and Border Protection sent this bulletin at 05/13/2022 11:17 AM EDT Cargo Systems Messaging Service CSMS #51883317 - Secure File Transport Protocol (SFTP) Connections for CBP Automated Systems CBP is aware that filers using Secure File Transport Protocol (SFTP) connections for CBP automated systems are encountering issues with connecting and/or staying connected. There are a limited number of SFTP connections available for the trade and these connections are frequently full. Therefore, when a filer is not actively transmitting data, their connection is severed so that other filers can connect and transmit their data to CBP. Any filer that is unable to connect to the SFTP servers should continue trying to connect. Those filers will be able to connect when a connection becomes available. For AES filers that have an ACE portal account with access to AES Direct, that is an alternative that could be used for urgent shipments. CBP is working to make more resources available to ease this congestion. Update your subscriptions, modify your password or e-mail address, or stop subscriptions at any time on your Subscriber Preferences Page . You will need to use your e-mail address to log in. If you have questions or problems with the subscription service, please contact subscriberhelp.govdelivery.com . This service is provided to you at no charge by U.S. Customs and Border Protection . Privacy Policy | GovDelivery is providing this information on behalf of U.S. Department of Homeland Security, and may not use the information for any other purposes. Powered by Privacy Policy | Cookie Statement | Help

Frequently asked questions

What is CSMS 51883317?

CSMS 51883317 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Secure File Transport Protocol (SFTP) Connections for CBP Automated Systems". CSMS bulletins are the operational instructions CBP issues to brokers, importers, and ACE filers covering rate changes, system updates, scope guidance, and other day-to-day customs-operations changes.

When was CSMS 51883317 published?

CBP published CSMS 51883317 on May 13, 2022. The bulletin's instructions are typically operative as of the publication date unless the body specifies a different effective date.

Is the CBP CSMS the legally binding instruction?

Yes — for at-the-border filing and entry collection. CSMS messages translate Commerce's Federal Register determinations into operational CBP instructions that ACE/ACS systems and brokers execute. The Federal Register notice is the underlying legal authority; the CSMS is the operational implementation. Both should be read together when reconciling a rate or scope change.

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