ACE Certification Environment Maintenance Window: August 26, 2026, 5:00–8:00 p.m. ET
CBP has scheduled a standard invasive maintenance window for the ACE Certification environment on August 26, 2026 from 5:00 p.m. to 8:00 p.m. ET; the Certification environment will be unavailable during this period. Trade partners conducting certification testing should plan around this outage.
This affects only the Certification/test environment, not ACE Production, so live entry processing is unaffected. Our position is that the window still matters to anyone mid-certification for an upcoming release, the rail manifest update included, because testing scheduled inside it will not behave as expected.
AI-assisted summary of a published CBP, USITC or Federal Register notice, with JFS CHB's position on it. For awareness only — always verify against the official notice before acting. Our position is general commentary on a published notice, not legal advice and not a binding opinion on any shipment. Nothing here creates a broker-client relationship or a duty of care, and it is not a substitute for a ruling, a licensed review of your facts, or the official notice itself.