CSMS 67557993·System update·January 30, 2026·View on csms.cbp.gov ↗

Resolved – ACE Reports 524 Time Out Error

Plain-English explanation

CSMS 67557993 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (system update), published on January 30, 2026. It carries the official CBP guidance brokers and importers must follow for the topic — "Resolved – ACE Reports 524 Time Out Error". 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

Cargo Systems Messaging Service CSMS # 67557993 - Resolved – ACE Reports 524 Time Out Error On January 29, 2026, U.S. Customs and Border Protection deployed an update to the Automated Commercial Environment (ACE) Reports application. This update resolves the increased occurrence of 524 (time-out) errors that some users experienced when running reports. This issue was limited to running reports in ACE and did not impact trade operations. If you continue to encounter time-out errors or any other issue in ACE Reports, please contact the CBP ACE Help Desk at (866) 530-4172 or ace.support@cbp.dhs.gov , or reach out to the ACE Reports team directly at ace.reports@cbp.dhs.gov .

Frequently asked questions

What is CSMS 67557993?

CSMS 67557993 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Resolved – ACE Reports 524 Time Out Error". 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 67557993 published?

CBP published CSMS 67557993 on January 30, 2026. 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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