FIRMS code

J931 CONTAINER EXAMINATION STATION

Deleted Inspection facility

This code is deleted in CBP's FIRMS list. Don't use it on new filings. FIRMSapi keeps deleted codes so lookups of old paperwork still resolve; check the port listing for a replacement.

Facility details

FIRMS code: J931
Name: CONTAINER EXAMINATION STATION
Address: PORT OF ENTRY
SWEETGRASS, MT 59484
Status: Deleted (D)
Facility type: Inspection facility (05)
CBP port: Sweetgrass, MT (3310)
CBP region: 3
Last changed: 2026-10-23
Data as of: 2026-10-23

Pre-filing validation

Validate J931 before you file

Validation fails J931: it's deleted, the reject ACE returns as 159. Search the port for an active replacement.

curl https://api.firmsapi.com/v1/validate \
  -H "x-api-key: $FIRMSAPI_KEY" -H "content-type: application/json" \
  -d '{"code":"J931","port":"3310","use":"location_of_goods"}'

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Source: U.S. Customs and Border Protection FIRMS code list, data as of 2026-10-23. FIRMSapi is not affiliated with CBP; confirm bond status and filing details in ACE.