• To : Export, New ACE Programming
Subject: Updated Export Manifest Appendix I
CBP updated and published on 02/22/2018 Export Manifest Appendix I – Reference and Exemption 
codes, to the carrier submitted and agreed upon exemption codes.

The highlighted exemption codes and agreed upon new exemption codes will continue to be accepted until 09/08/2018. On 09/08/2018 the original codes will be deactivated and no longer accepted.

https://www.cbp.gov/trade/ace/export-manifest