AESTIR Appendix C ISO Country Code Update
CBP updated Appendix C of the Automated Export System Trade Interface Requirements (AESTIR) to reflect revised ISO country codes, which are used in export filings. Filers using affected country codes in Electronic Export Information submissions will need to ensure their systems reflect the updated values.
We view ISO country code updates as a low-visibility but operationally significant change — incorrect codes in AES filings can trigger errors or fatal responses, and we are reviewing our filing software configurations against the updated Appendix C.
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