Letter of Credit Advice
for Exporters

A Letter of Credit (LC) is a legally binding payment instrument issued by a buyer's bank, guaranteeing that the seller (exporter) will receive payment provided they present documents that strictly comply with the LC terms. The bank's payment undertaking is independent of the underlying commercial contract between buyer and seller — meaning the bank pays against compliant documents, not against the goods themselves. This makes an LC one of the most secure forms of payment in international trade: the exporter is protected by a bank guarantee rather than relying solely on the buyer's willingness to pay.

UCP 600 (Uniform Customs and Practice for Documentary Credits, 2007 Revision) is the international rulebook for Letters of Credit, published by the International Chamber of Commerce (ICC). It contains 39 articles governing how LCs are issued, amended, examined, and honoured by banks worldwide. Almost every LC issued globally is subject to UCP 600, usually stated in Field 40E of the MT700 as 'UCP LATEST VERSION'. Understanding UCP 600 is essential for exporters because banks examine documents strictly against its rules — any deviation can result in the bank refusing to pay, even if the goods were shipped exactly as agreed.

ISBP 821 (International Standard Banking Practice for the Examination of Documents under UCP 600) is an ICC publication that provides detailed, practical guidance on how banks apply UCP 600 when examining trade documents. Where UCP 600 sets the rules, ISBP 821 explains how those rules are applied in practice — for example, what constitutes an acceptable description of goods on a commercial invoice, whether a correction on a document needs authentication, or how a multimodal transport document should be presented. DocSure AI checks your documents against both UCP 600 and ISBP 821.

Under UCP 600 Article 3, all Letters of Credit are irrevocable by default — meaning the issuing bank cannot cancel or amend the LC without the agreement of all parties, including the beneficiary (exporter). Revocable LCs offer the exporter little protection and are almost never used in modern trade. If your LC does not state whether it is revocable or irrevocable, it is deemed irrevocable under UCP 600.

A confirmed LC is one where a second bank — usually located in the exporter's country — adds its own payment undertaking on top of the issuing bank's guarantee. This protects the exporter if the issuing bank or the buyer's country defaults. Confirmation (Field 49 in MT700) is particularly valuable when trading with buyers in higher-risk countries or when the issuing bank is not internationally recognised. The cost of confirmation is typically 0.1–0.5% of the LC value and is either shared or borne by one party as agreed in the commercial contract.

A sight LC (Field 42C: SIGHT) requires the bank to pay immediately upon receipt of complying documents — typically within five banking days of presentation. A usance or deferred payment LC specifies a future payment date, such as '90 days from bill of lading date' or '60 days from sight'. Usance LCs effectively give the buyer a period of credit, which is common in many trade relationships. As an exporter, a sight LC gives you the fastest access to funds; a usance LC requires you to fund the gap between shipment and payment.

As soon as you receive a Letter of Credit, review it carefully before you ship the goods. The key things to check are: (1) Can you meet the shipment date and latest shipment deadline? (2) Can you obtain all the documents listed in Field 46A in the exact form specified? (3) Does the goods description in the LC match your commercial invoice exactly? (4) Is the LC amount correct, including currency and any tolerance? (5) Is the expiry date and place achievable — do you have enough time to present documents within 21 days of shipment? (6) Are the Incoterms correct and consistent with your contract? If anything is wrong, request an amendment before you ship — it is far easier to amend an LC before shipment than to correct documents after the fact.

Under UCP 600 Article 16, the bank must notify you of discrepancies within five banking days of receiving the documents. When you receive the discrepancy notice: (1) Review each discrepancy carefully against the LC terms and the UCP 600 article cited; (2) Assess whether the documents can be corrected and re-presented before the LC expiry date; (3) Contact the buyer to ask whether they are willing to waive the discrepancies — many buyers will instruct the bank to pay despite minor discrepancies if the goods are correct; (4) If the LC has not expired, correct the documents and re-present them as quickly as possible; (5) If the LC has expired, payment must be negotiated directly with the buyer outside the LC framework.

Yes. Under UCP 600 Article 10, an LC can be amended at any time before its expiry date, but only with the agreement of all parties — the issuing bank, the confirming bank (if any), and crucially the beneficiary (exporter). Common reasons to request amendments include extending the expiry or shipment date, increasing the LC amount, changing the document requirements, or correcting errors in the beneficiary's name or address. If you receive an amendment you do not agree with, you can reject it — the original LC terms continue to apply. Amendments are requested through the buyer, who instructs their bank.

Under UCP 600 Article 14(c), documents must be presented to the nominated bank within 21 calendar days after the date of shipment (the on-board date on the bill of lading or equivalent), but never later than the LC expiry date. The LC may specify a shorter presentation period — for example '15 days from date of shipment'. The 21-day rule is one of the most commonly breached LC conditions, often because exporters underestimate the time needed to gather all documents after shipment. Plan your document collection process before the goods leave the warehouse to avoid a late presentation discrepancy.

If the LC requires documents you cannot produce (for example, a specific inspection certificate from an approved body, or an insurance certificate when the buyer holds the insurance under EXW or FOB terms), you must request an amendment before shipment. Do not ship the goods and hope the bank will overlook the missing document — under UCP 600 Article 14(a), banks are required to refuse documents that do not comply with LC terms. Request the amendment in writing, explain why the document cannot be provided, and propose an alternative if applicable. DocSure AI's LC Drafting Assistant helps you build an LC that only requires documents you can realistically produce.

A discrepancy is any difference between the documents presented by the exporter and the terms required by the LC. Under UCP 600 Article 14, banks have five banking days to examine documents and identify discrepancies. Common discrepancies include: invoice amounts not matching the LC amount (outside Article 30 tolerance), incorrect or inconsistent beneficiary names, late presentation after the 21-day window or past LC expiry, bill of lading issues (missing on-board notation, wrong consignee), missing required documents, and inconsistent marks and numbers across documents. Discrepancies give the bank grounds to refuse payment.

Based on ICC surveys and banking practice, the most frequent LC discrepancies are: (1) Late presentation of documents — past 21 days after shipment or past LC expiry; (2) Description of goods on the commercial invoice not matching the LC — per Article 18, the description need not be identical but must not conflict; (3) Bill of lading issues — missing or incorrect on-board notation with date, wrong consignee or notify party details, claused (unclean) B/L; (4) Insurance discrepancies — wrong coverage amount (must be minimum 110% of CIF value per Article 28), wrong ICC clause wording, or the insurance document issued after the shipment date; (5) Amount discrepancies — invoice amount exceeds LC amount or tolerance; (6) Missing documents — a required document listed in Field 46A is not presented.

Strict compliance is the foundational principle of LC law: banks examine documents on their face alone and will refuse to pay if documents do not strictly comply with the LC terms, regardless of whether the underlying goods are correct. This means that even a minor typographical error — such as the beneficiary's address shown differently on the invoice compared to the LC — can be raised as a discrepancy. However, strict compliance does not mean identical compliance: UCP 600 Article 14(d) states that data in a document need not be identical to the LC but must not conflict with it. Understanding this distinction is crucial to preparing compliant documents.

Yes. Under UCP 600 Article 16, when the bank identifies discrepancies, it may approach the applicant (buyer) to request a waiver. If the buyer agrees to waive the discrepancies, the bank proceeds with payment. Waivers are common for minor or technical discrepancies where the goods are otherwise correct. However, the buyer is under no obligation to waive discrepancies, and the bank cannot force them to do so. This is why it is far better to present compliant documents in the first place than to rely on the buyer's goodwill to waive discrepancies after the fact.

The exact documents depend on the LC terms (Field 46A), but the most commonly required documents are: Commercial Invoice — must be issued by the beneficiary, in the LC currency, and describe goods consistently with the LC (Article 18); Bill of Lading or Multimodal Transport Document — must show clean on-board notation with date, correct consignee and notify party (Articles 19–20); Insurance Certificate or Policy — required when the seller is responsible for insurance under the Incoterm (CIF or CIP), must cover at least 110% of CIF value (Article 28); Certificate of Origin — confirms where the goods were manufactured; Packing List — details of packing, weights, and dimensions; Beneficiary Certificate — a signed statement from the exporter confirming a specific action (e.g. 'I certify that goods have been shipped in accordance with the purchase order').

A clean Bill of Lading is one that contains no clauses or notations by the carrier indicating a defective condition of the goods or their packaging. Under UCP 600 Article 27, banks will only accept clean transport documents. If the shipping company notes any damage, shortage, or irregularity on the B/L — making it 'claused' or 'unclean' — the bank will treat this as a discrepancy and refuse to pay under the LC. Always ensure goods are packed correctly and inspected before loading to avoid receiving a claused B/L.

Under UCP 600 Article 28, the insurance document must show coverage for at least 110% of the CIF or CIP value of the goods. If the CIF value is not stated in the LC, the bank will use 110% of the amount for which honour or negotiation is requested, or 110% of the gross value of the goods as shown on the invoice — whichever is greater. If the LC specifies a particular type of coverage (e.g. ICC (A) all-risks, or ICC (C) basic cover), the insurance document must show that exact clause. Under CIP Incoterms 2020, ICC (A) all-risks cover is the default minimum required.

The Incoterm affects which documents the seller must produce under the LC, particularly for transport and insurance: Sea freight only — FOB, CFR, CIF, FAS all require a Bill of Lading (Articles 20–22). Any mode of transport — FCA, CPT, CIP, DAP, DDP require a Multimodal Transport Document (Article 19) instead of a B/L. Insurance responsibility — only CIF and CIP require the seller to arrange and document insurance; for all other Incoterms the buyer arranges insurance and an insurance certificate should not be required of the seller in the LC. EXW is the most difficult for LC purposes — the seller has minimal control over the transport document and often cannot obtain the documents the LC requires. FCA or FOB are the most commonly used and cleanest Incoterms for LC transactions.

Under UCP 600 Article 14(c), documents must be presented to the bank within 21 calendar days of the shipment date, and never after the LC expiry date. The LC can specify a shorter period. Missing the presentation period is one of the most avoidable LC discrepancies. Best practice is to: appoint a freight forwarder experienced in documentary trade who will obtain the B/L promptly; prepare all other documents (invoice, packing list, certificate of origin, etc.) before the goods ship so they are ready to present immediately after loading; build a document checklist from the LC terms and work backwards from the presentation deadline.

MT700 is the standardised SWIFT message format used by banks worldwide to transmit Letters of Credit electronically. Each field in an MT700 has a specific number and purpose — for example, Field 32B contains the LC currency and amount, Field 44C is the latest date of shipment, and Field 46A lists all required documents. When an exporter requests that their buyer issue an LC with specific terms, they should ideally provide those terms in MT700 field format so the buyer's bank can issue the LC accurately. DocSure AI's LC Drafting Assistant generates a complete MT700-format LC draft with all fields populated, ready to share with your buyer.

Field 46A is one of the most important fields in the LC — it lists every document the exporter must present to obtain payment. Each entry should specify: the exact document name; the number of originals and copies required (e.g. '3/3 originals and 3 copies of Bill of Lading'); and any specific wording, certification, or endorsement required. Vague descriptions in Field 46A ('documents as per contract' or 'all required documents') are not acceptable under UCP 600 and create significant compliance risk. Every document requirement should be clear, specific, and achievable by the exporter.

Field 47A (Additional Conditions) allows the LC to impose requirements beyond the standard document list — for example, a requirement that the invoice must show a specific purchase order number, that goods must be shipped in a particular type of container, or that a pre-shipment inspection certificate from a named inspection body must be presented. Additional conditions increase compliance complexity and the risk of discrepancies. Use them only where genuinely necessary, keep the wording precise and measurable, and ensure you can satisfy every condition before agreeing to the LC terms.

The best approach is to draft the LC terms yourself and provide them to your buyer to pass to their bank. This ensures the LC reflects exactly what documents you can produce, the Incoterms you have agreed, the ports you are using, and the shipment timeline that is achievable. DocSure AI's LC Drafting Assistant walks you through a structured six-step form and generates a complete MT700-format LC draft you can send directly to your buyer. This is far more reliable than waiting to receive an LC from the buyer's bank and then trying to request amendments to terms you cannot meet.

DocSure AI provides free, AI-powered letter of credit advice through three tools: the LC Compliance Review reads your LC and supporting trade documents and identifies every discrepancy and warning against UCP 600 and ISBP 821 rules, with the exact article reference and a plain-English fix for each issue; the LC Drafting Assistant helps you create a complete, compliant MT700-format LC draft tailored to your specific trade terms and Incoterm; and the Document Builder reads your LC and generates pre-filled drafts of every document you need to prepare, such as commercial invoices, packing lists, and beneficiary certificates.

Yes. DocSure AI is currently free to use for all three tools — the LC Compliance Review, LC Drafting Assistant, and Document Builder. There is no subscription, no login required, and no limit on the number of analyses you can run.

No. Uploaded documents are processed entirely in memory and sent to the AI for analysis. They are never saved to a database, file system, or any persistent storage. Once the analysis is complete, the document data is discarded. DocSure AI does not retain any of your trade documents or LC data.

DocSure AI is an AI-powered advisory tool that provides guidance aligned to UCP 600 and ISBP 821 — but its outputs do not constitute legal or banking advice and do not replace a formal compliance opinion from a qualified trade finance professional. For high-value transactions, complex LC structures, or disputed discrepancies, you should always verify with your bank's documentary credits team or a qualified trade finance specialist. DocSure AI is best used as a first-line check to identify and fix issues before presenting documents to a bank.

DocSure AI is most valuable for: SME exporters who do not have an in-house trade finance team and need affordable, accessible LC guidance; experienced exporters who want a fast first-pass compliance check before presenting documents to the bank; exporters entering new markets where the buyer's bank issues LCs in unfamiliar formats; freight forwarders and trade finance advisers who want to give clients a detailed compliance check; and anyone who has previously experienced LC discrepancies and wants to avoid repeat issues.