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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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CBP barred PSC changes to IEEPA HTS on FTZ entry type 06
CBP announced an update to the ACE CATAIR Error Dictionary adding a new validation, error F883, that blocks a Post Summary Correction from modifying the IEEPA HTS on a Foreign Trade Zone entry type 06. CBP deployed the change to its certification and production systems on August 21, 2026. The update affects filers submitting PSCs on FTZ entries with an IEEPA HTS line.
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This update applies to Foreign Trade Zone entry type 06 filings, and Allied does not operate or manage foreign trade zones. We do not expect this validation to affect the entries we file for clients. Because IEEPA duties themselves ended on February 20, 2026, clients with questions about how this rule applies to their entries should ask Allied to review the specific filing.
CBP added new ACE validation checks for Section 232 auto parts offset licenses
CBP announced that on July 18, 2026 it deployed a new validation in ACE for import adjustment offset licenses used against Section 232 duties on automobile and medium and heavy duty vehicle parts. The update added two error codes: one flags a license submitted on a line where chapter 99 duty is not present, and one flags a license with a balance too low to cover the submitted duty. CBP posted the updated ACE CATAIR Error Dictionary V51 on CBP.gov to reflect these changes.
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This applies to filers who use import adjustment offset licenses against Section 232 duties on auto parts, not to importers generally. We check that any offset license we submit matches the duty status of the corresponding chapter 99 HTS line and carries enough balance, so entries do not trigger these ACE errors. Clients who import automobile or medium and heavy duty vehicle parts under Section 232 and use offset licenses should ask us to review how their entries are filed.
CBP added new ACE error to block conflicting duty status on auto parts and heavy vehicle HTS lines
CBP announced an update to the ACE CATAIR Error Dictionary that added a new fatal error, F876. The error stops an entry summary line from having both a dutiable Auto Part HTS number and a dutiable Medium and Heavy-Duty Vehicles HTS number in Chapter 99 at the same time. CBP deployed this validation to the certification and production ACE environments on June 25, 2026. The change affects filers who submit entry summaries with both types of HTS numbers on one line.
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This was a system-level filing rule for entry summaries with combined Auto Part and MHDV Chapter 99 HTS numbers. It appears to remain in effect, since we have not seen a later CSMS message that changes it. If you import auto parts or medium and heavy-duty vehicles, ask us to review how your entries classify Chapter 99 duty status on these lines.
CBP reminded PMS Test filers to pay supplemental duty bills electronically
CBP reminded participants in the Periodic Monthly Statement (PMS) Test that supplemental duty bills tied to entries originally paid on a monthly statement must be paid electronically. The requirement took effect December 15, 2025, and payment must be made via ACH Debit through the Pay.gov Bill Payment Form or via ACH Credit. Bills mailed by CBP since March 1, 2026 include the specific Pay.gov payment instructions. CBP said bills paid by other means may lead to suspension from monthly statement privileges.
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This message affects importers who participate in the PMS Test program and pay duties on a monthly statement. Nothing in later CBP messages we have seen changes this requirement, so it should still apply to supplemental duty bills from PMS Test entries. Clients enrolled in the PMS Test should confirm they pay supplemental bills electronically through Pay.gov or ACH Credit, and should ask us if they have questions about a specific bill.
CBP added duty checks in ACE for entries with up to 32 HTS codes per line
CBP announced that on February 17, 2026 it deployed an ACE enhancement that validates filer-provided duty amounts on entry summary lines listing up to 32 HTS codes. When a filer's duty amount does not match CBP's calculation, ACE returns condition code 624 for a line mismatch or 627 for a total mismatch. The message directed technical questions to CBP client representatives and other questions to CBP's ESAR email address.
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This is a system level change to how CBP validates entry summary duty amounts, and it concerns the filing process rather than importer action. We account for these mismatch codes when we prepare and transmit entry summaries with multiple HTS codes per line. Clients do not need to do anything because of this message, but if a specific entry shows a duty discrepancy, clients should ask us to review it.
CBP added a new ACE report to track Section 232 auto import adjustment offsets
CBP announced a new ACE Reports tool, TR-015 Section 232 Auto Credit, for importers and brokers with an ACE role. It shows entries filed with an offset license number for Section 232 duty offsets on automobile parts. The report helps track offset amounts claimed against limits set by the Department of Commerce.
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This report is a tracking tool for clients who use Section 232 auto parts offset licenses. It does not change any duty rate or filing requirement, and Allied does not need to take new action because of it. Clients who use these offsets should ask Allied to review their entries if they want help monitoring their license balances.
CBP added duty calculation error checks for entry summary filings in ACE
CBP announced in January 2026 that it enhanced ACE certification (CERT) to add two new validation codes, 624 and 627, that flag mismatches between estimated and calculated duty on entry summary lines with up to 32 HTS codes. CBP said the enhancement would move from CERT testing into ACE production on February 17, 2026. The message was aimed at software vendors testing ABI filing systems.
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This update concerns the filing software and validation checks brokers like Allied use in ACE, not actions importers need to take. The new codes help catch duty calculation errors on entry summary lines before filing. Clients do not need to do anything; if a specific entry raises a duty mismatch question, we can review it on request.
The summaries and positions are general information, not legal advice. Always check the official CBP message, which each page links to.
Does a change affect your entries?
Call (908) 291-8001 or email info@alliedchb.com