POSTPONED TO 4/1: ACE CERTIFICATION EXTENDED Scheduled Maintenance, Thurs April 1, 2021 @ 5pm ET to 9pm ET **TRADE TESTS NEEDED**

CSMS #46837058 - POSTPONED TO 4/1: ACE CERTIFICATION EXTENDED Scheduled Maintenance, Thurs April 1, 2021 @ 5pm ET to 9pm ET **TRADE TESTS NEEDED** U.S. Customs and Border Protection sent this bulletin at 03/31/2021 04:09 PM EDT CSMS #46837058 - POSTPONED TO 4/1: ACE CERTIFICATION EXTENDED Scheduled Maintenance, Thurs April 1, 2021 @ 5pm ET to 9pm ET **TRADE TESTS NEEDED** The EXTENDED Maintenance in the ACE CERTIFICATION environment, originally scheduled for this evening, has been postponed to tomorrow evening, Thur sday , April 1, 2021 from 5PM ET to 9PM ET for an ACE Infrastructure software upgrade that will improve the system performance for processing electronic MQ messages , inbound and outbound, in the following ACE areas: ACE Import manifests/bills (all modes of transportation) and associated entry filings. QP/WP In-bonds Entry summary (AE) Add and Replace messages The following ABI Queries: Cargo Manifest Query (CQ/C1) Importer/Bond Query (KI/KR) Entry Summary Query (JC/JD) **Trade partners are encouraged to submit these types of messages into the Certification environment on Friday, April 2nd, to ensure proper message sends and receipt of responses. The software upgrade to the ACE Production environment is planned for this weekend, April 3 rd , 9pm ET to 4am ET, unless otherwise notified.