Official websites use .gov
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Secure .gov websites use HTTPS
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Message formats and technical specifications necessary to electronically transmit data to CBP's automated systems.
| Attachment | Ext. | Size | Date |
|---|---|---|---|
| ACE AESTIR Appendix F - License and License Exemption Type Codes | 623.75 KB | 05/07/2025 |
0875-0419
