CSMS #68402148 · New ACE Drawback Error Validations Set to Deploy to PROD April 21, 2026

Brief takeaway: CBP is adding two new ACE error checks for certain Section 232-related drawback claims, which may cause claims to reject if timing or reporting conditions aren't met.

What changed: According to the notice, CBP will deploy two new Drawback error messages (FD12 and FD13) to the ACE Production environment on April 21, 2026. The notice states these validations support proclamations related to Medium- and Heavy-Duty Vehicle Parts and Automobile Parts, and apply to Direct Identification Manufacturing Drawback under 19 U.S.C. 1313(a) and Substitution Manufacturing Drawback under 19 U.S.C. 1313(b).

Who's affected: The notice names drawback filers making 1313(a) and 1313(b) claims tied to Medium- and Heavy-Duty Vehicle Parts and Automobile Parts (products of South Korea). It cites error FD12 for claims dated before November 1, 2025, and FD13 where the claim isn't reported with both the eligible 232 HTS number and a Chapter 1-97 HTS number and the requested amount exceeds available money on the entry summary line.

What to review:
- Review whether any drawback claims involve MHDVPs or automobile parts and fall under 1313(a) or 1313(b).
- Confirm claim dates relative to the November 1, 2025 threshold cited for FD12.
- Check whether claims report both the eligible 232 HTS number and the Chapter 1-97 HTS number.
- Confirm with your broker the updated Drawback Error Dictionary in the CATAIR supporting documentation.

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