A Facilities Information and Resources Management System (FIRMS) Code is a four digit alpha-numeric identifier provided by U.S. Customs and Border Protection to:
- Container Freight Stations,
- Warehouse Deconsolidators,
- Foreign Trade Zones,
- Bonded Warehouses,
- or any other US Customs Service bonded facility.
The FIRMS Code represents a location where certain goods are kept. FIRMS locations must be bonded and on file in Automated Manifest System (AMS). FIRMS codes can only be assigned to locations when the bond for that location has been filed with Customs and Border Protection.
All entries must include a FIRMS Code. CBP provides a list where you can search. If you cannot locate your code, you must contact the facility where your goods will be stored prior to Customs clearance for that facility’s FIRMS Code before you file your entry.
https://www.cbp.gov/document/report/acs-public-firms-code-report
Import documents, inbond transit orders, and other Customs documents require FIRMS codes when communicating with US Customs Ports of Entry.