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October 2026, question 49

Entry / Entry Summary · ACE entry summary data and business rules

A customs broker is preparing an ACE entry summary for merchandise arriving by truck. What should the broker report as the U.S. Port of Unlading?

  1. The port of entry where the truck arrives
  2. The port where the merchandise is released
  3. No port of unlading; the field should be left blank
  4. The port nearest to the ultimate consignee
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CBP's answer: C. C: No port of unlading; the field should be left blank

The U.S. port of unlading is the port where the merchandise was unladen from the importing vessel, aircraft or train. For merchandise arriving by any means other than vessel, rail or air, such as a truck, the field is left blank, so C is right.

For merchandise arriving in the U.S. by means of transportation other than vessel, rail or air, ACE Entry Summary Instructions, page 10

Search for: U.S. PORT OF UNLADING

CBP's key cites: ACE Entry Summary Instructions, page 10

Question and key from CBP's October 2026 exam and answer key. The walk-through is ours; quotes are from the pinned editions in the reference viewer (HTSUS 2026 Basic, 19 CFR 2025 edition).