2026-13574: Modification and Clarification of the National Customs Automation Program Test Regarding Post-Summary Corrections
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This document announces modifications and a clarification to U.S. Customs and Border Protection's (CBP) National Customs Automation Program (NCAP) test pertaining to the processing of post-summary corrections (PSCs) and the payment of increases in estimated duties, taxes, and fees resulting from a PSC. Except to the extent expressly announced or modified by this document, all aspects, rules, terms and conditions announced in previous notices regarding the test remain in effect. For ease of reference, the entire test is reproduced, with the changes, in this document.
The agency’s own summary, as published.
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