Cargo may arrive with extra packages, missing quantities, a different model, a different product, a different origin or a description that does not match the invoice, packing list and customs declaration. The most dangerous response is to continue delivery or rewrite commercial documents before identifying the shipment stage and the point at which the discrepancy arose. One physical mismatch may affect duty, import licensing, specialized inspection, origin preference, inventory and claims against the seller or carrier. This article provides an evidence-based workflow by declaration status: when document correction is sufficient, when a supplementary declaration is required, when cancellation or a new declaration may be necessary, and when distribution must stop pending Customs handling.

Prepared for B2B logistics reference · Legal update through 20 July 2026

QUICK FACTS

Stop movement before concluding

Preserve the condition, seals and handover evidence where the goods remain under customs supervision or the discrepancy point is unknown.

Different discrepancies require different files

Surplus, shortage and wrong-model cargo do not have the same tax, licensing or evidence consequences.

Declaration status drives the procedure

Pre-registration, clearance, physical inspection, post-clearance and post-supervision stages have different legal routes.

A commercial claim does not replace customs correction

A supplier, carrier or warehouse letter is evidence; it does not replace a supplementary declaration, tax payment or specialized procedure.

There is no universal “minor tolerance”

Contractual tolerance, weighing variation or rounding applies only with a valid basis and does not automatically remove the duty to declare accurately.

SCOPE OF APPLICATION

This article applies to commercial imports and exports where actual cargo differs from the customs declaration, commercial invoice, packing list, bill of lading or air waybill, manifest, licence, origin document or technical file. It covers FCL, LCL, air and road cargo. Processing, export production, EPE, bonded warehouse, temporary import–re-export and other special regimes require additional regime-specific controls.

Important boundary: a shortage discovered at the consignee’s warehouse may be an import discrepancy, but it may also be a domestic transport loss after customs release. The custody transfer point must be established before classifying the event as a customs declaration mismatch.

KEY TERMS

Term	Meaning	Operational role
Surplus cargo	Actual quantity, packages, weight or goods exceed the declared/documented amount.	Identify the undeclared portion, the sending error and whether the surplus is legally importable.
Short cargo	Actual packages, quantity or weight are lower than declared.	Determine whether the shortage occurred at origin, during carriage, terminal handling or domestic delivery.
Mis-shipment / different goods	Actual goods differ in name, model, construction, use, origin or SKU.	Reassess HS, duty, origin preference, licensing and specialized policy.
Supplementary declaration	Formal amendment or supplementation of declaration data and supporting records.	Restores alignment between customs data, documents and physical goods.
Tally / survey report	Record of quantity, weight, packing, seal and inspection method.	Creates independent evidence of the discrepancy and discovery time.
Chain of custody	Record of who controlled cargo at each stage.	Separates origin mis-shipment from loss after customs release.

NATURE OF THE ISSUE – CLASSIFY BEFORE ACTING

A discrepancy can only be handled correctly after four questions are answered: what the actual goods are; when the mismatch arose; the current declaration status; and whether the error changes duty or an import/export condition. A wrong model must not be treated merely as a quantity error because one model character may change HS classification, certification, licensing or origin coverage.

Control point: if surplus or different goods are prohibited, suspended, licensed, quota-controlled or subject to specialized inspection not covered by the file, a supplementary declaration is not an automatic legalization mechanism.

Mismatch type	Identification	Main impact	Evidence to lock	Initial route
Surplus of the same product	Same model/SKU, more units than declared.	Higher quantity, value and duty; licence/certificate quantity may be exceeded.	Tally, photos, weighing, shipper confirmation, adjusted invoice/PL.	Review importability of the surplus and declaration route by status.
Short quantity	Missing packages, units or weight.	Lower value/duty; commercial claim and inventory correction.	Opening report, quantity survey, EIR, shipper shortage confirmation.	Locate the loss point; supplement only where legally and evidentially supportable.
Different model within the product family	Generic name is similar but model/specification differs.	Potential change to HS, tax, licence, conformity and labelling.	Nameplate, catalogue, serial list and SKU photographs.	Reassess classification and policy; do not only amend the packing list.
Completely wrong goods	Actual goods are not the purchased/declared goods.	May lack a lawful import basis, value basis and origin proof.	Inspection record, mis-shipment letter, purchase order and contract.	Consider return/re-export, a new declaration or Customs-directed route.
Different origin/marking	Physical marks conflict with C/O or declared origin.	Loss of preference, verification and labelling exposure.	Label photos, production records, C/O and packing trace.	Stop preference claim; verify and adjust duty/declaration where required.
Different condition/quality	New becomes used; complete becomes disassembled; goods are damaged.	Possible change in import policy, value or classification.	Condition report, survey, photos and insurance records.	Separate customs status from cargo-loss claim and declare actual condition.

HANDLING MATRIX BY DISCOVERY STAGE

Stage	Immediate action	Possible customs route	Core evidence	Do not
Before declaration registration	Lock invoice, packing, transport, manifest and technical data.	No declaration supplementation yet; correct the data set before filing.	Final records confirmed by the parties.	File estimated figures with a plan to amend later.
Registered but not cleared	Escalate internally, preserve cargo and submit supplementation according to system status.	Supplementary declaration; cancellation/new declaration may be needed for locked fields.	Before–after table, revised records and cause confirmation.	Move goods through supervision before the mismatch is handled.
Found during document or physical inspection	Record the actual condition with Customs and provide technical/source records.	Customs may require supplementation, reclassification/reassessment or violation handling.	Inspection record, photos, samples/survey, invoice/PL and catalogue.	Relabel, repack or move cargo without authorization.
Post-clearance, goods still or partly under supervision	Stop collection of the remaining goods; conduct tally/survey and contact the registering office.	Eligible supplementary route with specific files for surplus/mis-shipment. The published post-clearance shortage dossier is for goods not yet removed or only partly removed from the customs-supervision area.	Shipper confirmation, quantity survey, transport and adjusted commercial records.	Rely solely on an internal warehouse receipt.
Post-clearance, goods at warehouse/in circulation	Quarantine the mismatch, trace custody and assess duty/policy; contact Customs.	For matters eligible for post-clearance supplementation: self-correction within 60 days from clearance and before a post-clearance audit or inspection decision may proceed by supplementary declaration; later correction is still required and may be sanctioned. Matters relating to import/export licences or specialized inspection do not follow the ordinary post-clearance supplementation route.	Audit trail, warehouse and inland delivery records, payment, serial/lot trace.	Sell, consume or destroy cargo whose import legality is unresolved.

Control point at the customs-supervision area: for goods not subject to a licence, bought or sold as a whole lot/whole vessel and covered by a valid contractual tolerance, Customs supervision may confirm the actual quantity; the declarant must supplement the declaration at the registering office within five working days after the entire shipment passes the supervision area. For other quantity discrepancies, supplementation is required and the excess portion may not pass supervision before the discrepancy is handled.

DOCUMENTS AND DATA TO REVIEW

Document/data	Issuer/preparer	What it proves	Fields to reconcile
Declaration and status history	Customs system/declarant	Registration, routing, clearance and supervision status.	Declaration number, line item, quantity, value and discovery time.
Invoice, packing list, contract/addendum	Seller and buyer	Transaction, quantity, value and agreed correction.	Model/SKU, unit, price, Incoterms and correction reason.
B/L, AWB, manifest, booking	Carrier/forwarder	Packages, weight, containers and journey.	Packages, gross weight, container/seal and parties.
Tally, EIR, weigh ticket, opening report	Terminal/warehouse/carrier/company	Condition at the handover point.	Date/time, seal, witnesses and counting method.
Quantity/quality survey report	Qualified surveyor	Independent quantity or condition finding.	Scope, method, samples and serial/lot.
Surplus/short/mis-shipment confirmation	Shipper	Cause and origin responsibility.	Shipment, invoice, SKU, discrepancy and proposed solution.
Catalogue, datasheet, labels/nameplate photos	Manufacturer/company	Identity, model, use, construction and origin.	Exact actual model; not a similar model file.
Licence, specialized result and origin proof	Competent body/issuer	Scope of lawful import and preferential treatment.	Goods, model, quantity, party, validity and linked declaration.

RECOMMENDED PROCESS

Stop movement and preserve condition

Quarantine the discrepant portion and record seal, packing, location and custodian. Goods under customs supervision must only be handled as instructed by the supervising Customs unit.

Create physical evidence

Conduct a witnessed count, photographs/video, report, re-weighing and serial/lot capture. For material shortages or disputes, consider an independent survey before cargo moves.

Lock the chain of custody

Compare origin loading records, carrier tally, terminal EIR/release, truck delivery and warehouse receipt to locate the point at which the discrepancy appeared.

Classify the legal impact

Separate quantity, product, model, origin, condition and value differences; reassess HS, duty, C/O, licences, specialized inspection and labelling for the actual goods.

Determine declaration status and amendability

Check whether the declaration is unregistered, pending, cleared, still supervised or at warehouse; identify whether supplementation, cancellation, a new declaration, re-export or another procedure applies. After clearance, a mismatch involving an import/export licence or specialized-inspection result must not be routed mechanically through ordinary supplementation; the appropriate procedure must be confirmed with the sector authority and Customs.

Complete source records

Obtain shipper confirmation and adjusted invoice/contract records. Where a licence or specialized result states quantity/model, review whether it can be adjusted before requesting Customs acceptance.

Complete customs and tax action

Submit the supplementary declaration and evidence through the applicable channel; pay additional duty and late-payment interest where applicable. If goods are not importable, coordinate return/re-export or another competent-authority decision.

Run the commercial claim separately

Send a timely notice of claim to the supplier, carrier, insurer or warehouse. Do not postpone customs correction until the claim is settled.

Close the file and internal systems

Retain customs feedback, amended declaration, reports, survey, tax records and claim correspondence; update ERP, stock, cost, origin and lot-level files.

COMMON RISKS AND ERRORS

Error	Cause	Potential impact	Control
Only revising invoice/packing list	Commercial records are confused with customs data.	Declaration and actual goods remain inconsistent; recovery and audit risk.	Use a before–after matrix covering records, declaration, duty and stock.
Counting only at the final warehouse	No control at the delivery point.	Custody evidence is lost and the shortage point cannot be proven.	Set a tally gate at terminal/CFS/warehouse and named signatories.
Treating wrong model as quantity error	No SKU-level technical review.	Wrong HS, licence, conformity, origin or label.	Identify by nameplate/serial and map policy by model.
Using only a supplier letter	No independent physical evidence.	Customs may have insufficient grounds to accept the change.	Combine confirmation with survey, transport and handover reports.
Applying commercial tolerance automatically	Contract allows ±5%, assumed to be customs tolerance.	Declared quantity remains inaccurate and permit/duty may differ.	Separate contractual tolerance from customs accuracy.
Selling surplus before resolution	Delivery pressure and no WMS hold.	Undeclared or ineligible goods enter the market.	Apply a “customs hold” status in ERP/WMS.
Waiting for the claim before supplementation	Commercial dispute is confused with legal duty.	Loss of proactive timing; increased interest and sanction exposure.	Run customs and claim workstreams in parallel under one owner.

LEGAL BASIS AND OFFICIAL SOURCES

Document/source	Status at update date	Use in this article
Consolidated Customs Law 54/VBHN-VPQH dated 23 March 2026	Current consolidated text, including amendments effective through 1 July 2026.	Declarant responsibility, supplementary declaration, document/physical inspection and post-clearance.
Consolidated Circular 46/VBHN-BTC dated 24 November 2025	Consolidated customs procedures; read together with later amendments.	Declaration, inspection, supervision, dossier and declaration handling.
Circular 121/2025/TT-BTC	Effective 1 February 2026.	Electronic procedures, dossier, declaration data and supplementation amendments.
Decree 167/2025/ND-CP	Effective 15 August 2025.	Amends Decree 08/2015 on customs procedures, inspection and supervision.
Decree 169/2026/ND-CP	Effective 1 July 2026.	Administrative sanctions in customs, applied according to the exact act and consequences.
Administrative procedure 2.002184 – Supplementary customs declaration	Ministry of Finance public-service portal; use it for the published dossier and procedure flow.	It lists specific files for surplus and mis-shipment; its post-clearance shortage dossier is stated for goods not yet removed or only partly removed from customs supervision. Its displayed legal-basis list may not yet show every 2025–2026 amendment, so it must be read together with Circular 121/2025/TT-BTC and the current instruments.

Legal note: this article does not assign a fixed penalty. The result depends on discovery timing, goods type, discrepancy value, tax difference, specialized policy, supervision status and evidence.

FAQ

Can surplus of the same model be received into stock immediately?

Not safely. First determine whether the surplus has been declared and is legally importable. If it remains under supervision, preserve it and work with the registering Customs office.

Must a small shortage be supplemented?

There is no universal exemption merely because the quantity is small. Review the unit, rounding basis, duty/value and physical shortage evidence.

Does a shipper mis-shipment letter automatically allow re-export?

No. It is supporting evidence. Re-export/return also depends on declaration status, supervision, goods policy and the accepted customs procedure.

If the wrong model has the same HS code, is a packing-list amendment enough?

No. Model differences may change licences, conformity, labels, origin coverage or value even when the HS code remains the same.

Is an internal warehouse shortage report sufficient after release?

It is relevant but may not prove that the shortage existed before customs release. Reconcile custody, seals, EIR, transport and consider an independent survey.

Does supplementation within 60 days guarantee no penalty?

No. The 60-day period is an important self-correction window before a post-clearance audit or inspection decision, but it does not automatically remove sanction risk. The ordinary post-clearance route also excludes matters involving import/export licences and certain specialized inspections.

May the company wait for a credit note before contacting Customs?

It should not. A credit note addresses commercial value; customs reporting, supplementation and tax must be assessed immediately based on declaration status.

APPLICATION NOTE: The final route must be determined by declaration and by the discrepant portion. A concise submission to Customs should include a declared-versus-actual table, timeline, physical evidence, cause and proposed route rather than fragmented emails without an operational conclusion.

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