ACE Error F883: PSC Cannot Modify IEEPA HTS on FTZ Entry Type 06

Key Points

• CBP released ACE CATAIR Error Dictionary V52 on August 24, 2026, adding new fatal error code F883.
• Error F883 blocks any Post Summary Correction (PSC) on a Foreign Trade Zone entry type 06 that attempts to modify an IEEPA HTS classification in any way.
• Filers who submit a PSC on an FTZ-06 entry touching an IEEPA HTS line will receive a hard rejection in ACE; the entry will not be updated.
• The updated CATAIR Error Dictionary V52 is available in the Supporting Documents section under "Documentation for Entry Summary Chapters" on CBP.gov.

On this page

1. What changed in the ACE CATAIR Error Dictionary
2. What Error F883 means in practice
3. Affected entry types and IEEPA HTS coverage
4. What importers, brokers, and compliance teams should do
5. Key references

CBP has updated the ACE CATAIR Error Dictionary to version 52, introducing fatal error F883, which prevents filers from submitting a Post Summary Correction on a Foreign Trade Zone entry type 06 if any IEEPA HTS number on that entry is modified. The block is a hard validation, meaning the system will reject the PSC outright. Filers managing FTZ admissions and withdrawals that carry IEEPA tariff liability need to review their correction workflows immediately.

The links in this article go directly to the primary documents: the official CBP CSMS notice and the CBP.gov documentation page. Read the source before updating your internal procedures.

What changed in the ACE CATAIR Error Dictionary

On August 24, 2026, CBP published CSMS #69635410, announcing that ACE CATAIR Error Dictionary V52 had been posted to CBP.gov under Supporting Documents, Documentation for Entry Summary Chapters. The sole substantive change is the addition of error code F883 with the message text: PSC NOT ALLOWED TO MODIFY IEEPA HTS.

Error codes in the CATAIR Error Dictionary are the definitive reference for ACE system validations. A code prefixed with "F" is a fatal error, meaning ACE rejects the transaction entirely rather than flagging it as a warning.

What Error F883 means in practice

A Post Summary Correction is the mechanism brokers and importers use to correct entry summary data after acceptance but before liquidation. Under the new validation, if a PSC on an FTZ entry type 06 changes an HTS number that is subject to International Emergency Economic Powers Act duties in any way, including a reclassification, an addition, or a deletion of that HTS line, ACE will reject the entire PSC with error F883.

The error does not distinguish between corrections that increase or decrease IEEPA duty liability. Any modification to an IEEPA HTS on an FTZ-06 entry triggers the rejection.

Affected entry types and IEEPA HTS coverage

The restriction applies specifically to entry type 06, which is the FTZ consumption entry used when merchandise is withdrawn from a foreign trade zone for entry into U.S. commerce. Other entry types are not referenced in CSMS #69635410.

IEEPA HTS numbers are those added to the Harmonized Tariff Schedule to implement duties imposed under the International Emergency Economic Powers Act. Filers should consult the current Harmonized Tariff Schedule and their internal IEEPA classification mappings to identify which lines on their FTZ-06 entries are in scope.

What importers, brokers, and compliance teams should do

• Download ACE CATAIR Error Dictionary V52 from the CBP.gov Supporting Documents page and update any internal error-handling documentation or software that references the prior version.
• Audit open FTZ entry type 06 entries that carry IEEPA HTS lines: if a post-summary correction is needed on those entries, do not attempt to modify the IEEPA HTS through a PSC, as ACE will reject it with F883.
• Coordinate with your ACE software vendor or in-house IT team to ensure that PSC transaction logic flags F883 rejections and routes them for manual review rather than automatic resubmission.
• Review CSMS #69635410 directly and preserve it as part of your compliance file for any FTZ-06 entries with pending IEEPA duty questions.

Key references

• CSMS #69635410 (August 24, 2026): CBP notice announcing ACE CATAIR Error Dictionary V52 and new error code F883.
• CBP.gov, Supporting Documents, Documentation for Entry Summary Chapters: location of the CATAIR Error Dictionary V52 download.
• Harmonized Tariff Schedule of the United States (USITC): authoritative source for IEEPA HTS numbers and current duty rates.