ACE Portal Field Validator
Validate HTS, MID, and EIN formats for US Customs ACE entries.
ACE Validation Logic
Automated Commercial Environment (ACE) filings require strict formatting. This tool validates syntax for HTS, MID, and EIN fields but does not check the live status of a specific code in the CBP database.
Indicative calculation for planning only. Verify against the applicable CBP notification in force on your shipment date before filing or contracting.
Validation Reference
HTS: Standard 10-digit classification used for CBP entry summary (7501).
MID: 2-char ISO country code + first 3 of name 1 + first 3 of name 2 + first 3 of city + first 4 of address.
EIN: Internal Revenue Service (IRS) employer identification number.
Overview & methodology
Why Field Validation Matters
Incorrectly formatted data is a leading cause of CBP filing errors. A Manufacturer ID (MID) constructed without following the ISO 2-character country code prefix or the specific name-shortening rules will trigger a fatal error in the ACE system. Likewise, an HTSUS code must be submitted as a clean 10-digit string, regardless of where the dots appear in the printed tariff book.
Numerical Example: HTS Syntax Check for ACE
The ACE system stripped of dots and spaces. This tool confirms the resulting 10-digit string is valid for a 7501 Entry Summary.