CSMS #68401616 · Updated ACE Entry Summary Error Dictionary Now Available on CBP.gov

Brief takeaway: CBP has updated its ACE Entry Summary Error Dictionary to add a new validation error that blocks post-summary corrections when a related refund is already being processed.

What changed: According to the notice, CBP published an updated ACE Entry Summary Error Dictionary that includes a new validation error (Condition Code 864, "PSC NOT ALLOWED – REFUND REQUESTED"). The notice states this error occurs when a filer attempts to file a post-summary correction (PSC) for an entry for which a Consolidated Administration and Processing of Entries (CAPE) declaration has been submitted, because a CAPE refund is in process. The notice also states CBP will launch the first phase of the CAPE tool in the ACE Portal on April 20, 2026.

Who's affected: The notice does not name specific product types, HTS chapters, or countries of origin. It is filed under the IEEPA category and references CBP's IEEPA Refund webpage, so it may be relevant to filers handling entries tied to CAPE declarations and IEEPA-related refunds.

What to review:
- Review whether any of your entries have a CAPE declaration submitted before attempting a PSC.
- Confirm with your broker how a CAPE refund in process may affect PSC filings.
- Check the updated Entry Summary Error Dictionary on CBP's CATAIR webpage for the new Condition Code 864.
- Confirm CAPE launch timing and next steps with your assigned Client Representative or ESAR.

This is general information, not legal advice and not a compliance determination — confirm specifics with a licensed customs broker or trade counsel.