Warehouse & 3PL Glossary

Customs Assigned Importer Number

A customs assigned importer number is an identifier U.S. Customs and Border Protection issues to importers who don't have an IRS-issued tax ID or Social Security number. It allows foreign or first-time importers to clear goods and be tracked in customs records.

In the warehouse: Teamship's WMS puts Customs Assigned Importer Number to work as part of Shipping & Freight.

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