U.S. Customs and Border Protection assigns a 4-character alphanumeric Facility Information and Resources Management System (FIRMS) Code for each activated zone site, including each activated site within a subzone.

A 3-character alphanumeric code assigned by U.S. Cutoms which permits electronic filing directly into ABI/ACE. A Filer Code is not required unless the FTZ Operator or User would like to self-file some or all of the electronic filing requirements. 

Foreign-trade zones are subject to additional security requirements. The guidelines for bonded facilities are interpreted by the Port Director based on the merchandise to be stored in the zone, and the location of the zone site or subzone.

In the context of foreign-trade zones, the Port Director is the U.S. Customs and Border Protection director responsible for the port of entry. Some smaller ports of entry have only an Officer physically located at the port, and are under the jurisdiction of an Area Port Director.

Zone Restricted (Z, or ZR) status merchandise in an FTZ may only be exported or destroyed. This restriction means it is used sparingly, but one benefit is that drawback claims may be filed on merchandise that has been admitted in ZR status. 

Privileged Foreign (P, or PF) status merchandise in an FTZ is taxed based on its condition at the time is admitted to the FTZ. For certain types of merchandise, PF status is mandated by the Foreign-Trade Zones Board even if NPF status would be advantageous. 

Non Privileged Foreign (N, or NPF) status merchandise in an FTZ is taxed based on its condition at the time is withdrawn from the FTZ. 

Domestic (D) status merchandise in an FTZ is either a product of the United States, or imported merchandise on which all duties, fees, and applicable excise taxes have been paid. One benefit of admitting material in domestic status is that duties and fees will not be collected again at the time the merchandise is withdrawn from the FTZ.

Zone status is the way zone users elect the duty rate they intend to pay if and when the merchandise is sold in the United States. Zone status is selected at the time merchandise is admitted to a foreign-trade zone for the first time. There are four options: Domestic, Non Privileged Foreign, Privileged Foreign, and Zone Restricted.