1. What Should Importers Compare First?
Different documents do not necessarily establish an inaccurate entry. Check whether the discrepancy changes information that must be declared to CBP.
Match Entry Data with Commercial Records
Compare CBP Form 7501 or ACE entry data with invoices, purchase orders, payments, and supplier agreements. Check value, quantity, HTSUS code, and origin. Use technical and production records where relevant.
Explain Any Invoice Revision
A revised invoice may reflect a discount, additional payment, or clerical error. Retain both versions and records explaining the change. A replacement invoice does not itself amend the CBP entry.
2. Which Differences Could Affect Customs Liability?
Under 19 U.S.C. § 1484, the importer of record must exercise reasonable care. Each disputed entry field calls for different evidence.
Classification and Product Details
Compare the Harmonized Tariff Schedule of the United States (HTSUS) code with the product's composition, function, and specifications. A supplier's label does not establish the correct U.S. .lassification.
Transaction Value and Other Payments
Under 19 U.S.C. § 1401a, transaction value generally starts with the price paid or payable for goods sold for export to the United States, plus applicable statutory additions. Review assists, royalties, commissions, and other payments under the customs valuation rules.
Origin and Production Evidence
Shipment location may differ from legal origin. Compare supplier certificates with production and sourcing records under the applicable origin rules. Errors can affect preferential treatment, additional duties, or marking requirements.
3. Which Procedure Applies to the Entry?
Liquidation status determines the available response. A Post Summary Correction (PSC), protest, and prior disclosure serve distinct purposes.
Post Summary Correction before Liquidation
Eligible unliquidated entries may be corrected through a PSC submitted using the Automated Commercial Environment (ACE) and Automated Broker Interface (ABI).
The usual deadline is the earlier of 300 days after entry or 15 days before scheduled liquidation. Special rules apply to extended or suspended liquidation.
Since August 5, 2026, PSC increases paid before liquidation require Automated Clearinghouse (ACH) payment. Additional antidumping or countervailing duties must be paid through ACH within three business days after PSC submission.
Protest after a CBP Decision
After liquidation, an ordinary PSC is generally unavailable. Under 19 U.S.C. § 1514, eligible CBP decisions may be protested within 180 days after liquidation or the relevant decision.
A protest must identify the contested decision and supporting grounds. Electronic filing is available through ACE. A denied protest may lead to customs litigation in the U.S. Court of International Trade if statutory conditions are met.
Potential False Statements and Prior Disclosure
A material false statement or omission may raise liability under 19 U.S.C. § 1592. Filing a PSC does not automatically qualify as a prior disclosure.
Under 19 C.F.R. § 162.74, prior disclosure has separate timing, information, and duty-loss tender requirements. The commencement of a CBP investigation and the importer's knowledge of it may affect eligibility.
4. What If CBP Requests Records or Detains Goods?
A document request, proposed adjustment, and cargo detention require different responses. Identify the notice type before preparing supporting documents.
CBP Forms 28 and 29
CBP Form 28 requests information, while Form 29 communicates proposed or completed action. Review the issue identified and submit relevant evidence through authorized ACE Portal or Document Image System (DIS) channels where available. Follow the deadline and instructions provided by CBP.
Cargo Detention
Under 19 U.S.C. § 1499(c), CBP generally has five business days after merchandise is presented for examination to release or detain it. CBP generally must provide detention notice within five business days after the detention decision.
If no final admissibility determination occurs within 30 days after presentation, the merchandise may be deemed excluded for protest purposes. Statutory exceptions apply, including certain decisions assigned to other federal agencies.
Recordkeeping and Responsible CBP Office
Under 19 C.F.R. § 163.4, entry records generally must be retained for five years, subject to exceptions. Using a customs broker does not eliminate the importer's reasonable-care obligation. Missing records may create separate customs compliance issues.
Use the entry number, port code, assigned CBP Center, and notice instructions to identify the responsible office. A Greenpoint business address does not create a separate customs procedure.
5. Frequently Asked Questions
How Can I Confirm an Entry's Liquidation Status?
Use the entry number to check ACE reports and available CBP liquidation records, including the public liquidation bulletin. Verify the actual liquidation date and any extension or suspension. Do not estimate the entry's status solely from the date of importation.
Can I Convert Paper Customs Records to Digital Files?
Under 19 C.F.R. § 163.5, original electronic records may remain electronic. Conversion to an alternative storage method generally requires written notice at least 30 calendar days before implementation.
Importers must also preserve qualifying entry records in their original format for the prescribed 120-day period following the applicable release period, subject to exceptions. Stored records must remain readable, retrievable, and protected against alteration.
6. When Should an Importer Seek Legal Review?
Repeated discrepancies, significant duty changes, or potential violations under § 1592 may warrant legal review.
A customs attorney can examine entry summaries, original and revised invoices, payment records, production documents, and CBP notices to assess the appropriate filing or response.
26 Oct, 2026
