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System MaintenanceACECSMS #66973904 ·

CBP held a 3-hour ACE test maintenance window on Dec 3, 2025

CBP title: ACE Certification Standard Invasive Maintenance Window on Wednesday December 03, 2025, from 5:00 p.m. to 8:00 p.m. ET

This message is from December 2, 2025. Later CSMS messages may have changed it. See the latest trade news

What did CBP announce?

CBP announced an ACE Certification (test) environment maintenance window on December 3, 2025, from 5:00 p.m. to 8:00 p.m. ET. This was a standard invasive maintenance window, not a production system outage.

What is Allied's position?

This message concerned CBP's test environment and did not affect production filings. It is now history and required no action from clients at the time or since.

General information, not legal advice.

What does the CBP message say?

U.S. Customs and Border Protection sent this bulletin at 12/02/2025 12:49 PM EST

Please be advised there will be an ACE Certification Standard Invasive Maintenance Window on Wednesday December 03, 2025, from 5:00 p.m. to 8:00 p.m. ET.

Read the official CSMS #66973904

Which terms does this use?

Does this change affect your entries?

Send us your entry numbers or your product list. A licensed customs broker tells you what the change means for your goods.

Call (908) 291-8001 or email info@alliedchb.com