Customs Clearance Process Guide: Tracking Import Entry Status

To track your import customs clearance process, monitor automated customs portals or your freight forwarder’s tracking system using your primary shipment references: an 11-digit Entry Number or Bill of Lading (BOL) in the United States, a Cargo Control Number (CCN) or PARS in Canada, or a 12-digit Declaration Number in Vietnam. Clearance moves through digital milestones from transmission acceptance to secondary agency reviews and final release. Tracking each milestone prevents terminal storage fees and confirms when your goods are legally and commercially ready for pickup.

Key takeaways

• Electronic data transmission acceptance confirms file receipt in the customs system, but it does not mean your goods have received import customs clearance.
• In the United States, U.S. Customs and Border Protection (CBP) disposition code 1C confirms physical cargo release, while formal accounting on CBP Form 7501 must be completed within 10 working days.
• In Canada, importers must post direct financial security in the CARM Client Portal to obtain Release Prior to Payment (RPP) privileges before filing their Commercial Accounting Declaration (CAD).
• Physical cargo pickup from a port or rail terminal requires four distinct approvals: customs release, partner government agency clearance, carrier freight release, and terminal fee settlement.
• Commercial shipments left unentered beyond 15 calendar days at U.S. ports of entry are transferred to a General Order (GO) warehouse at the importer’s risk and expense.

Which reference numbers do you need for customs entry tracking?

To perform customs entry tracking accurately, you must use the specific transaction identifier recognized by the destination customs authority and the carrier manifest. Border agencies do not track shipments by commercial invoice numbers or purchase order references.

United States: CBP Entry Number and Bill of Lading

When importing into the United States through the Automated Commercial Environment (ACE), tracking relies on two primary identifiers:

• 11-digit CBP Entry Number: Formatted as XXX-XXXXXXX-X. The first three alphanumeric characters represent the filer code assigned by CBP to your customs broker or self-filing organization. The next seven digits are the unique entry number, and the final digit is a computer-generated check digit.
• Transport Identifiers: Before an entry number is assigned, shipments are tracked via the ocean Master Bill of Lading (MBL) or House Bill of Lading (HBL) preceded by the four-letter Standard Carrier Alpha Code (SCAC), or the 11-digit Air Waybill (AWB) number with its three-digit airline prefix.

Canada: Transaction Number and CCN/PARS

For shipments entering Canada under the Canada Border Services Agency (CBSA), the primary tracking references connect the carrier’s Advanced Commercial Information (ACI) eManifest to the broker’s accounting declaration:

• 14-digit Transaction Number: Structured with a 5-digit broker or account security code, an 8-digit shipment identifier, and a 1-digit check number. This number appears on the release packet and the Commercial Accounting Declaration (CAD).
• Cargo Control Number (CCN) and PARS: A barcode string combining the carrier’s 4-character CBSA carrier code with a unique sequential shipment reference. Under the Pre-Arrival Review System (PARS), motor and rail carriers submit this number prior to border arrival so CBSA officers can review the declaration while the truck or train is in transit.

Vietnam and Asia: VNACCS Declaration Number

For North American businesses sourcing goods from Asia or exporting to Vietnam, the General Department of Vietnam Customs processes entries through the VNACCS/VCIS (Vietnam Automated Customs Clearance System / Vietnam Customs Intelligence Information System) platform:

• 12-digit Customs Declaration Number (Số tờ khai): Generated automatically upon electronic submission in VNACCS.
• Enterprise Tax Code (Mã số thuế): To look up declaration status on the Vietnam Customs public portal, the 12-digit declaration number must be paired with the registered importer or exporter tax identification code.

One mismatched character between the carrier’s manifest and the broker’s entry transmission breaks automated electronic pairing. If a steamship line transmits a Bill of Lading number with an extra space or missing prefix compared to the customs broker’s Automated Broker Interface (ABI) filing, the system cannot link the entry to the vessel manifest. Working with an experienced customs clearance team ensures manifest numbers are verified against carrier bills before transmission, preventing avoidable border delays.

What do the main customs status codes mean in the customs clearance process?

Customs status codes show whether your cargo is accepted for processing, referred for specialized agency review, flagged for physical inspection, or released into commerce. Reading these milestones correctly prevents your logistics team from dispatching drayage trucks prematurely.

Transmission Accepted vs. Customs Released

The most common tracking mistake is equating an “Accepted” status with customs clearance. When a broker transmits data to ACE in the United States or through the Integrated Import Declaration (IID) in Canada, the first return message is Transmission Accepted (or PARS Registered).

This code only confirms that the electronic message contains no syntax errors and is queued for automated risk assessment. It does not mean customs has reviewed the tariff classification or authorized cargo release.

United States CBP Disposition Codes

In the U.S. ACE portal, status updates are transmitted as numeric and alpha-numeric disposition codes tied to CBP Form 3461 (ACE Cargo Release):

• Accepted / Under Review: The entry data is validated and undergoing automated targeting.
• Disposition Code 1C (Release): The most important milestone for U.S. importers. Code 1C confirms that CBP has authorized the release of the merchandise from customs custody. When entries are filed prior to vessel arrival, a preliminary status converts to 1C only after the vessel officially arrives and transmits its arrival manifest.
• PGA Hold / Under Review: Indicates that a Partner Government Agency (PGA)—such as the Food and Drug Administration (FDA), U.S. Department of Agriculture (USDA), Environmental Protection Agency (EPA), or Consumer Product Safety Commission (CPSC)—has placed an independent hold on the entry. Even if CBP issues a preliminary customs release, the cargo cannot leave the terminal until every PGA transmits a “May Proceed” message.
• Examination Holds (Manifest Hold / CET / MET): Signals that the container has been selected for secondary inspection. This ranges from a VACIS (Vehicle and Cargo Inspection System) non-intrusive X-ray scan at the port to an intensive physical examination at a Centralized Examination Station (CES), where the container is drayed off-dock and devanned by Merchandise Enforcement Team (MET) or Contraband Enforcement Team (CET) officers.

Canada CBSA Status Milestones

In Canada, status updates flow through the Release Notification System (RNS) via EDI and the CARM Client Portal:

• Accepted / Awaiting Arrival: The PARS or IID submission is on file with CBSA, waiting for the highway carrier, rail line, or ocean vessel to transmit the border arrival notice.
• Released: CBSA has made a release decision and transmitted the electronic release notice to the carrier, sufferance warehouse, and customs broker.
• Refer to Secondary / Held: The shipment is flagged for documentary verification or physical inspection. Common triggers include Canadian Food Inspection Agency (CFIA) agricultural checks, wood packaging (ISPM-15) inspections, or random compliance sampling.

Asian Three-Channel Routing (Green, Yellow, Red Lanes)

If your supply chain includes manufacturing or distribution in Vietnam and Asia, customs tracking follows an automated risk-channeling model (Luồng Hải Quan) inside VNACCS:

• Green Channel (Luồng Xanh – Code 1): Automatic digital clearance generated within 1 to 3 seconds of submission. The shipment is exempt from documentary and physical inspection, clearing as soon as duties and taxes are recorded.
• Yellow Channel (Luồng Vàng – Code 2): Detailed documentary review by customs officers. Importers must upload and verify the commercial invoice, packing list, bill of lading, Certificate of Origin (C/O), and any import permits. Standard processing takes 1 to 2 working days.
• Red Channel (Luồng Đỏ – Code 3): Mandatory documentary audit combined with a physical cargo inspection at the port or ICD. Red channel inspections are divided into three tiers: Level 1 (100% physical tally of the cargo), Level 2 (10% random sampling), and Level 3 (5% random sampling).

Shipments containing regulated commodities—such as temperature-controlled food products, pharmaceuticals, chemicals, or oversized machinery—frequently trigger PGA holds or Yellow/Red channel reviews. Coordinating these movements through specialized services ensures that health certificates, dangerous goods declarations, and import permits are uploaded in the exact format required before the vessel berths.

Why is your container held after customs release?

A customs release authorizes legal entry of your goods into the country, but physical release from a port or rail terminal requires clearing separate commercial, agency, and terminal obligations. Seeing “Released” on a customs tracker does not mean a trucker can pull the container out of the yard.

To pick up an ocean container or air freight shipment, your logistics team must verify that four separate green lights are active in the terminal operating system:

1. Customs Release: CBP (Code 1C) or CBSA (RNS Released) has cleared the primary entry.
2. Partner Government Agency (PGA / OGA) Release: All agricultural, health, and safety regulators (such as FDA, USDA, or CFIA) have lifted their holds. A shipment can show “CBP Released” on the manifest while an active FDA hold blocks the terminal gate.
3. Carrier Freight Release: The ocean steamship line or airline has confirmed payment of all ocean/air freight charges and Destination Terminal Handling Charges (DTHC), and has received the surrendered Original Bill of Lading (OBL), telex release, or Sea Waybill. Until the carrier removes its commercial hold, the container remains locked.
4. Terminal Release (Demurrage and Equipment): The marine or rail terminal operator confirms that the container is discharged from the vessel, mounted or accessible in the yard, and free of unpaid storage fees (demurrage).

The Cost of Ignoring Post-Release Obligations

Two major financial risks arise right around the time of customs release: demurrage accrual and post-release accounting deadlines.

First, marine and rail terminals do not pause your “free time” clock just because customs or a partner agency selected your container for inspection. If a container is held for a CFIA document review or moved to a U.S. Centralized Examination Station (CES) for a physical exam, terminal demurrage, carrier per-diem detention, and CES drayage/devanning charges accrue to the importer’s account. Monitoring entry status daily allows you to submit requested documents within hours rather than days, keeping the container within its 3-to-5-day port free time window.

Second, physical cargo release is not the final step in customs compliance. In the United States, obtaining immediate release on CBP Form 3461 starts a strict 10-working-day clock under 19 CFR § 142.12 to file the formal Entry Summary (CBP Form 7501) and pay estimated duties, taxes, and Merchandise Processing Fees (MPF).

Similarly, in Canada under the CARM mandate, importers who obtain Release Prior to Payment (RPP) must still submit their final Commercial Accounting Declaration (CAD) and settle monthly duty statements through the portal. Failing to complete post-release accounting results in liquidated damages, late-payment interest, or the suspension of your RPP bond privileges. Partnering with a dedicated customs brokerage provider keeps your post-release accounting declarations and duty settlements aligned with statutory deadlines.

How can importers check customs clearance status directly?

Importers can monitor clearance status in real time through official government trade portals without waiting for manual email updates from intermediaries. Setting up direct portal access gives your supply chain team immediate visibility into holds, duty assessments, and compliance notices.

1. Canada: CBSA CARM Client Portal

Every commercial importer bringing goods into Canada is required to register their Business Number (BN) and import-export program account (RM) on the CBSA CARM Client Portal. Through the portal, importers can directly:

• View the real-time status of Commercial Accounting Declarations (CAD) and check whether shipments have cleared via RNS.
• Monitor their Release Prior to Payment (RPP) financial security balance (whether backed by a surety bond or cash deposit) to ensure high-value shipments do not exceed security limits and trigger border holds.
• Delegate portal visibility and filing authority to their designated customs broker while retaining direct access to official CBSA adjustment notices and Statements of Account (SOA).

2. United States: CBP ACE Secure Data Portal

U.S. importers of record (as well as non-resident Canadian companies registered as foreign importers of record) can apply for a free importer account on the CBP ACE Secure Data Portal. An active ACE portal account allows you to:

• Run automated entry status reports across all U.S. ports of entry, regardless of which customs broker filed the entry.
• View Electronic Notice of Liquidation, respond to CBP Form 28 (Request for Information) or CBP Form 29 (Notice of Action), and audit tariff classifications and duty payments recorded on Form 7501.

3. Vietnam: General Department of Vietnam Customs Portal

For shipments clearing in Vietnam, enterprises can verify declaration routing (Green, Yellow, or Red channel) and tax settlement status directly on the General Department of Vietnam Customs website (customs.gov.vn). Entering the 12-digit declaration number, the enterprise tax code, and the registered identification number displays the exact timestamp of branch clearance and container barcode eligibility for port gate-out.

4. Bridging the EDI Gap with Your Freight Forwarder

While government portals provide official regulatory records, specific terminal-level manifest holds, carrier freight release statuses, and bonded examination movement orders often transmit solely through Electronic Data Interchange (EDI) to the customs broker and carrier of record.

Working with an FMC-registered NVOCC (FMC Org. No. 031607) and customs brokerage provider bridges this gap. When one team manages both the ocean or highway manifest and the customs brokerage entry, EDI alerts from CBP’s ABI and CBSA’s RNS are reconciled directly against carrier arrival notices.

Frequently asked questions

How long does standard import customs clearance take?

Electronic declarations submitted prior to arrival usually clear within minutes to a few hours once the carrier reaches the port or border crossing. Shipments routed for documentary review (such as Vietnam’s Yellow channel or a CBSA/PGA document check) typically take 1 to 3 business days. If a container is flagged for a physical intensive examination (Red channel or a U.S. CES exam), clearance can take 3 to 10 or more business days depending on port congestion and examination queue times.

Can you file import customs clearance documents before the vessel or truck arrives?

Yes, pre-arrival filing is standard practice to prevent border bottlenecks. In the United States, ocean ACE Cargo Release entries can be transmitted up to 5 days before vessel arrival once origin departure is confirmed. In Canada, PARS entries can be submitted up to 45 calendar days before arrival, while Integrated Import Declarations (IID) can be transmitted up to 90 days in advance.

What happens if an import entry is not filed on time in the United States?

Under U.S. customs regulations (19 CFR § 142.2), an importer must file an entry within 15 calendar days of the cargo’s arrival at the port of entry. If a commercial shipment remains unentered after the 15-day window expires, CBP transfers the merchandise to a bonded General Order (GO) warehouse. All transportation, storage, and administrative GO fees are billed to the importer’s account.

What is the difference between CBP Form 3461 and CBP Form 7501?

CBP Form 3461 (ACE Cargo Release) is the initial entry transmission used to secure the immediate physical release of merchandise from CBP custody at the border or port. CBP Form 7501 (Entry Summary) is the formal accounting declaration filed within 10 working days after release, which calculates the final Harmonized Tariff Schedule (HTS) duties, taxes, anti-dumping fees, and statistical reporting data.

Managing customs documentation and tracking cross-border entry milestones requires precise coordination across Canadian, U.S., and Asian border systems, and because customs regulations change frequently, you should always confirm specific compliance requirements with the relevant customs authority or our brokerage specialists. At Soleil Transportation, we guide importers and exporters through every step of the customs clearance process, including HS tariff classification, preferential tariff programs, CARM and ACE compliance, and door-to-door freight forwarding. To review an upcoming shipment or request a quote, call us at +1 888-998-5199, email info@soleiltransportation.com (Monday to Friday, 8:30am to 4:30pm Eastern), or reach out via our contact page.