CSMS 55372571·Operational·March 6, 2023·View on csms.cbp.gov ↗

ACE Portal Modernization – Employee Social Security Number and Tax ID Masking Now Effective

Plain-English explanation

CSMS 55372571 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on March 6, 2023. It carries the official CBP guidance brokers and importers must follow for the topic — "ACE Portal Modernization – Employee Social Security Number and Tax ID Masking Now Effective". 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 # 55372571 - ACE Portal Modernization – Employee Social Security Number and Tax ID Masking Now Effective U.S. Customs and Border Protection sent this bulletin at 03/06/2023 09:18 AM EST Cargo Systems Messaging Service CSMS # 55372571 - ACE Portal Modernization – Employee Social Security Number and Tax ID Masking Now Effective On March 4, 2023, U.S. Customs and Border Protection (CBP) deployed the ability to mask trade employees’ social security numbers (SSN) and organization Tax ID numbers in the modernized ACE Secure Data Portal (ACE Portal). Specifically, for users with read-only account access, employee SSNs and organizational Tax IDs are now hidden in the modernized ACE Portal. Currently, Account Owners can manage user access in the legacy ACE Portal under the “Accounts” tab. For detailed instructions on managing user access to mask sensitive information, review the Legacy ACE Masking PII guide . For questions about the ACE Portal Modernization, visit ACE Portal Modernization or contact ACEPortalModHelp@cbp.dhs.gov . 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 55372571?

CSMS 55372571 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "ACE Portal Modernization – Employee Social Security Number and Tax ID Masking Now Effective". 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 55372571 published?

CBP published CSMS 55372571 on March 6, 2023. 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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