A single incorrect character in a container or seal number can create a mismatch across the bill of lading, cargo manifest, customs declaration and terminal system. The issue is rarely solved by merely editing a file: cargo may be stopped at gate-in or gate-out, a B/L or manifest amendment may be required, customs data may need to be amended, and documentation charges or delivery delays may arise. The correct approach is to establish the physical source of truth, distinguish a clerical error from an actual container swap or seal replacement, and then correct every affected record in the proper sequence and at the correct shipment stage.

Prepared by TGIMEX · Operational and legal update: 20 July 2026

QUICK FACTS

Do not guess the correction

Check physical photos, EIR/gate records, booking, Shipping Instructions, B/L, manifest and customs data to establish the correct number.

A paper error is not the same as a physical mismatch

If the actual seal differs from the documents, treat it as a supply-chain security event until a valid seal replacement record is available.

Correct the issuing source

The carrier/forwarder corrects the B/L and manifest; the customs declarant amends the declaration; the depot or terminal corrects its EIR or gate data.

A specific gate-supervision procedure may apply

If the container number in the customs declaration is inaccurate when cargo passes the customs supervision area, use the dedicated procedure. For exports, submit Form 31/BKCT/GSQL with carrier confirmation and complete the supplementary declaration within five working days.

Never cut or replace a seal informally

Within a controlled area, follow instructions from Customs, the terminal/depot or carrier and retain a complete audit trail.

Amendment does not automatically remove liability

Customs consequences, if any, depend on the timing, nature and actual impact of the error.

Illustration for How to Correct an Incorrect Container or Seal Number on Shipping Documents — Illustration of the logistics topic, document or operation discussed in the article.

SCOPE

This article applies to FCL export and import shipments by sea where container and seal data are exchanged among the cargo owner, forwarder, ocean carrier, terminal/depot and Customs. It covers errors appearing on Shipping Instructions, draft or final Bills of Lading, manifests, Arrival Notices, Delivery Orders, EIR/gate records and customs declarations.

It does not replace special procedures for customs seals, quarantine seals, dangerous goods, investigations, theft or suspected unauthorized interference. Such cases require direct coordination with the competent authority and, where relevant, insurers and surveyors.

KEY TERMS

Term	Meaning	Role in correction
Container Number	The unique equipment identification, generally comprising the owner code, equipment identifier, serial number and check digit.	Links the physical unit to the booking, B/L, manifest, customs and terminal records.
Seal Number	The number on the seal affixed to the container door after stuffing or after an authorized inspection/resealing event.	Supports cargo integrity and chain of custody; a mismatch may be clerical or may indicate that the seal was replaced.
Shipping Instruction – SI	Data submitted by the shipper/forwarder for preparation of the transport document.	Often feeds the draft B/L and manifest; it should be corrected before the documentation cutoff whenever possible.
Bill of Lading – B/L	A transport document issued by the carrier or NVOCC.	Only the issuer should amend it; a locally edited PDF is not an official amendment.
Cargo Manifest	Cargo data filed by the carrier or its agent with Customs.	If the B/L data have already been manifested, a B/L correction may also require a manifest amendment.
EIR / Gate Record	Equipment interchange receipt or system record of the container passing a depot or terminal gate.	Important operational evidence of the actual container and the time of handover.
Customs Amendment	Correction or supplementation of customs declaration data together with supporting documents.	Handled according to the clearance stage and the functions supported by the customs system.

HOW THE ERROR PROPAGATES

1. One wrong entry can spread across several systems

Container and seal details are commonly entered during stuffing or SI submission and then reused for the draft B/L, final B/L, manifest, customs declaration, Arrival Notice, Delivery Order and terminal records. Correcting only one document therefore does not prove that the shipment data have been fully corrected. Identify both the issuing party and every downstream system that received the data.

2. Classify the root cause

Typing error: the physical container and seal never changed, but one or more records contain an incorrect character.
Legitimate operational change: a damaged container was swapped, an empty unit was replaced at the depot, or a seal was replaced following inspection, security control or terminal handling. Evidence must show the old and new numbers and the reason.
Unexplained irregularity: the seal is missing, broken or different, or the physical container does not match the records and no valid report exists. Do not treat this as a routine documentation typo.

3. Confirm the physical source of truth

Use clear photos of the container identification and seal, EIR/gate records, stuffing records, inspection or resealing reports, booking data and terminal/carrier confirmation. Only after the correct number is established should amendment requests be sent.

Control point: If the seal affixed to the container differs from the document and there is no record explaining the difference, do not open the container, cut the seal or reissue documents merely to make the records match. Preserve the condition, take photographs, suspend delivery and notify the party controlling the location.

DECISION TABLE BY SCENARIO

Scenario	Primary owner	Required action	Supporting evidence	Delay risk
Error in SI or draft B/L before cutoff	Shipper/forwarder and carrier	Resubmit the SI or request an online amendment; review the revised draft.	Container/seal photos, stuffing record, booking.	The error may flow into the manifest.
Error in final B/L before manifest lock	B/L issuer	Request B/L amendment and confirm whether a manifest amendment is also required.	Before/after instruction, reason and proof of the correct number.	Amendment charges or document release delay.
Error after manifest filing or vessel departure	Carrier/NVOCC/manifesting agent	Request B/L and manifest amendment under carrier and destination procedures; monitor approvals and fees.	Formal request, B/L, SI, EIR and photos.	Destination mismatch, delayed D/O or gate-out.
Error found before customs declaration registration	Customs declarant	Correct the declaration software and recheck against the B/L, manifest and EIR before final transmission.	Finalized document set.	A formal customs amendment will otherwise be required.
Error found after registration but before clearance	Customs declarant and Customs	Amend under the current Article 20 procedure. For a paper declaration or a field not supported by the System, submit two originals of Form 03/KBS/GSQL with supporting documents.	Corrected B/L/manifest, EIR, carrier confirmation and photos.	Processing delay and possible administrative handling depending on timing and nature.
The container number in the customs declaration is inaccurate when cargo passes the customs supervision area	Customs declarant and supervising Customs officer at the border gate	Imports: present the import cargo delivery/receipt document. Exports: submit the Export Container Number List, Form 31/BKCT/GSQL, with a carrier-issued document confirming the container-number change. Customs verifies and updates the correct number in the System; the declarant then files a supplementary declaration at the office of registration within five working days after the cargo passes the supervision area.	Delivery/receipt document or EIR; Form 31 for exports; carrier confirmation of the container-number change; B/L and related records.	Gate hold, delivery delay or missing the five-working-day amendment deadline. This specific procedure concerns container-number discrepancies, not an unexplained seal-number mismatch.
Error found after clearance	Customs declarant	Submit a post-clearance amendment based on the 60-day rule and the post-clearance audit status; retain the complete audit trail.	Before/after records, reason and proof.	Post-clearance review and possible administrative consequences.
Seal replaced after inspection	Authority or operator conducting the opening/resealing	Record old and new seal numbers, reason, time, place and witnesses; update affected systems.	Inspection/resealing report and before/after photos.	Shortage dispute or integrity concern.
Unexplained broken, missing or different seal	Customs/terminal/depot/carrier and insurer where relevant	Stop delivery, preserve the condition, make an incident report and arrange inspection or tally as instructed.	Photos, CCTV/gate records, EIR and site report.	Security, cargo claim and custody liability.

DOCUMENTS AND DATA TO CHECK

Document/data	Issuer or preparer	Use	Fields to match
Physical container and seal photos	Stuffing location, driver, terminal or consignee	Establish the source of truth	Container no., seal no., time and location
EIR/gate record	Depot/terminal	Evidence of equipment handover or gate movement	Container no., condition, timestamp, location
Booking confirmation	Carrier/forwarder	Shipment and equipment reference	Booking no., vessel/voyage, container type
SI and draft B/L	Shipper/forwarder; carrier prepares draft	Pre-issuance correction	Container no., seal no., packages, gross weight
Final B/L and manifest confirmation	Carrier/NVOCC/agent	Transport document and manifest correction	B/L no., container/seal, vessel/voyage and ports
Customs declaration, cargo delivery/receipt document and container list	Customs declarant; carrier/terminal for supporting records	Supplementary declaration, customs-supervision-area handling or explanation	Container no., B/L, date cargo passed the supervision area; Form 31/BKCT/GSQL and carrier confirmation for exports where applicable
Container swap or resealing report	Depot, terminal, carrier or inspection authority	Proof of a legitimate physical change	Old/new numbers, reason, time and confirmation
Email/amendment request	Cargo owner/forwarder	Create an audit trail	Before/after data, cause, requester and timestamp

RECOMMENDED WORKFLOW

Freeze the questionable data.

Do not transmit the declaration, approve the draft, issue the document or dispatch the truck for gate-out until the correct number is confirmed.

Verify the physical unit.

Check photographs, EIR, gate records, stuffing records and inspection reports. Preserve the condition if the seal is irregular.

Create a before-and-after matrix.

List each affected document, old data, correct data, reason, evidence and the person approving the correction.

Correct the issuing source.

The carrier/NVOCC corrects the B/L and manifest; the depot/terminal corrects EIR or gate data; the customs declarant submits the customs amendment. Never substitute a self-edited file for an official reissue.

Apply the customs procedure for the current stage.

Before channeling results, after channeling but before clearance, and after clearance are distinct stages. Check whether the System supports the field. For a paper declaration or an unsupported field, prepare two originals of Form 03/KBS/GSQL and supporting evidence under the current rules.

Dedicated customs-supervision-area procedure: Where an inaccurate container number is discovered in the customs declaration at the customs supervision area: for imports, present the cargo delivery/receipt document; for exports, submit Form 31/BKCT/GSQL together with the carrier-issued confirmation of the container-number change. After the supervising Customs officer verifies and updates the correct number in the System, file the supplementary declaration at the customs office of registration within five working days after the cargo passes the supervision area. Do not use this route to regularize an unexplained seal mismatch.

Perform a final cross-system review.

Compare at least the B/L, manifest, customs declaration, Arrival Notice/D/O and terminal data. For a replacement seal, confirm that the old/new seal record is retained and distributed.

Close the incident file.

Retain emails, revised documents, reports, photographs, amendment charges and completion timestamps for claims, audit and root-cause review.

COMMON RISKS AND ERRORS

Error	Cause	Impact	Control
Amending the B/L without checking manifest status	Assuming automatic synchronization	Destination Customs or terminal still receives old data	Obtain written confirmation that both B/L and manifest data are updated.
Editing the B/L or EIR PDF locally	Attempt to save time	Unofficial document and fraud-control risk	Use only a document reissued by the authorized issuer.
Opening cargo despite a seal mismatch	Treating it as a simple typo	Loss of integrity evidence and difficult cargo claim	Preserve the condition and make an incident report.
Failing to record the old seal when resealing	Incomplete report	Broken chain of custody	Record old/new seal, reason, time, place and confirmation.
Customs amendment without source evidence	Only stating “typing error”	Insufficient basis for acceptance	Provide corrected B/L/manifest, EIR, photos and carrier/depot confirmation.
Waiting until D/O or gate-out	No pre-alert/document audit	Charges, storage and delivery delay	Check container/seal at stuffing, draft B/L, pre-alert and pre-declaration stages.
Using Form 03/KBS/GSQL instead of the dedicated customs-supervision-area file	Failing to distinguish the general amendment route from the special procedure for a container-number discrepancy at the gate	Rework, gate delay or missing the five-working-day supplementary-declaration deadline	For exports, use Form 31/BKCT/GSQL with carrier confirmation; for imports, present the cargo delivery/receipt document; then amend within the required period.

LEGAL BASIS AND OFFICIAL SOURCES

The sources below support the duty to declare accurately, the amendment framework and the operational need to keep seal data consistent. For a specific shipment, always check the version in force, local Customs instructions, carrier procedures and terminal conditions.

Source	Status/date	Relevance
Customs Law No. 54/2014/QH13 and Law No. 90/2025/QH15	Read as part of the current legal framework	Accurate declaration principle and the statutory framework for amendments.
Decree 08/2015/ND-CP and Decree 167/2025/ND-CP	Decree 167/2025 effective 15 August 2025	Current customs procedure, control and supervision framework.
Circular 38/2015/TT-BTC, Circular 39/2018/TT-BTC and Circular 121/2025/TT-BTC	Circular 121/2025 effective 1 February 2026	Current Article 20 amendment procedure, including unsupported system fields and the specific customs-supervision-area process for an inaccurate container number: Form 31/BKCT/GSQL for exports and a five-working-day supplementary-declaration period.
Circular 50/2018/TT-BTC	In force; effective 5 June 2018 (status checked through 20 July 2026)	Data fields and forms for vessel and cargo manifest reporting.
Decree 169/2026/ND-CP	Effective 1 July 2026	Administrative penalties in customs; not every data error is handled identically.
Maersk – Container seal numbers; Hapag-Lloyd – Shipping Instructions; ONE – Global Container Security Seal Standards	Operational policies may change	Carrier guidance on accurate seal reporting and amendment channels.

Translation notice: References to Vietnamese legislation in this English article are operational translations only and are not official legal translations.

FAQ

Should a one-character container error on the Invoice or Packing List be corrected?

Yes, where the document contains a container number. Even if it does not control terminal data, inconsistency can create issues during document review, claims or internal audit. The issuer should release a controlled revision.

The B/L seal number is wrong, but the physical seal is intact. What should be done?

Photograph the actual seal, compare the stuffing record and EIR, and request an amendment from the B/L issuer. Confirm whether the manifest has already been filed.

If the carrier swaps the container before sailing, must the customs declaration be amended?

It may need to be updated if the old number appears in the declaration or container list. Obtain the swap confirmation/new EIR, check the declaration status and follow the applicable amendment route.

Which seal number applies after inspection and resealing?

Records created after resealing should use the new seal number, while the file must retain both the old and new numbers and the resealing report. Never erase the old seal from the audit trail.

At the customs supervision gate, should Form 03 or Form 31 be used for a wrong container number?

They are not interchangeable. For an export container-number discrepancy identified when cargo passes the customs supervision area, submit Form 31/BKCT/GSQL with the carrier-issued confirmation of the container-number change. For imports, present the cargo delivery/receipt document. After Customs updates the correct number, file the supplementary declaration at the office of registration within five working days. Form 03/KBS/GSQL belongs to the general amendment route for paper declarations or fields not supported by the System.

Does amendment within 60 days guarantee no penalty?

No. The 60-day period identifies a post-clearance amendment case. Any administrative treatment depends on the circumstances, timing and applicable penalty rules.

Who pays the B/L or manifest amendment charge?

This depends on the carrier tariff, timing, service contract and cause of the error. Obtain a written charge notice; there is no universal fee for all carriers and ports.

APPLICATION NOTE: The correct process depends on trade direction, carrier, ports, manifest status, customs declaration status, seal type and the reason for the change. This article does not replace carrier approval, Customs instructions, terminal records or a survey report for a specific shipment.

IMPLEMENTATION SUPPORT

TGIMEX can review container and seal data across the booking, SI, B/L, manifest, customs declaration and terminal records; prepare a before-and-after matrix; coordinate amendment requests and assemble supporting evidence based on the actual shipment stage. Scope is confirmed only after review of the documents and does not replace a carrier or authority decision.

TGIMEX IMPLEMENTATION SUPPORT

TGIMEX helps businesses turn the article into a shipment-ready checklist, covering input-data review, dossier preparation, milestone control, and coordination with the relevant parties.

Convert guidance into checks

Assign an owner and deadline to every operational control point.

Reconcile shipment data

Compare booking, transport, commercial, customs, and delivery evidence.

Manage operational risk

Record discrepancies, actions, and decision evidence to prevent recurrence.

Discuss your shipment dossier

ELECTRICAL – ELECTRONICS – IT EQUIPMENT

F&B

MACHINERY

HOUSEHOLD GOODS

COSMETICS – PERSONAL CARE