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What changed at U.S. Customs?

Every message from the CBP Cargo Systems Messaging Service (CSMS), with a plain-English summary and Allied CHB's position. We add new messages every hour.

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  1. CBP added new ACE error checks for Section 232 drawback claims on auto parts

    CBP announced it deployed two new ACE error validations for drawback claims on April 21, 2026. The FD12 error flags 1313(a) or 1313(b) claims dated before November 1, 2025. The FD13 error flags claims that lack both the Section 232 HTS number and the Chapter 1-97 HTS number, or that claim more than is available on the entry summary line, for Medium- and Heavy-Duty Vehicle Parts and Automobile Parts from South Korea.

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    This affects drawback claims we file under 19 U.S.C. 1313(a) and 1313(b) that involve Section 232 duties on these vehicle and auto parts. We report both the eligible Section 232 HTS number and the Chapter 1-97 HTS number, and confirm claim dates and amounts, to avoid these ACE errors. Clients filing drawback on these products should ask us to review their claims against these validations, since we have no information that later CSMS messages changed this.

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  2. CBP added ACE checks for Section 232 auto and truck parts drawback claims

    CBP said two new ACE error validations for drawback claims under 1313(a) and 1313(b) were deployed to the ACE test environment on March 17, 2026. The validations support Proclamation 10984 on medium and heavy duty vehicles, vehicle parts and buses. They flag claims dated before November 1, 2025, claims missing both the eligible Section 232 HTS number and the Chapter 1 to 97 HTS number, or claims that exceed the money available on the entry summary line. CBP said these validations would move to the production ACE environment on April 21, 2026.

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    We file duty drawback claims for clients, including claims tied to Section 232 tariffs on auto and truck parts. This message describes validations CBP added to catch incomplete or overclaimed drawback claims under 1313(a) and 1313(b). The production deployment date in the message has already passed, so clients with pending or planned drawback claims on these goods should ask us to review their claim data for the required HTS numbers and amounts.

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The summaries and positions are general information, not legal advice. Always check the official CBP message, which each page links to.

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