UCP 600

UCP 600 Article 16: Examining Commercial Invoices Under Refusal

📅 2026-07-13 5 min read UCP 600 / ISBP 745

Introduction

When a bank identifies a discrepancy in the commercial invoice and decides to refuse the presentation, Article 16 governs the refusal procedure. The commercial invoice is the most frequently examined document in documentary-credit practice, and invoice discrepancies — description mismatches, amount overages, wrong applicant name — are the most common reasons for refusal. This guide addresses the intersection of Article 16 refusal procedures and Article 18 invoice examination requirements.

Failure Mode Analysis

Failure Mode 1: Description mismatch — refusal required

The invoice states "Type A widgets" while the credit states "Type B widgets." Under ISBP 745 A20, this is a discrepancy. The bank must issue a refusal notice under Article 16(c) listing the specific description mismatch.

Failure Mode 2: Amount exceeds credit — refusal required

The invoice total exceeds the credit amount by any margin. Under Article 18(c), this is a discrepancy. The refusal notice must state the exact amounts: "Invoice total USD 100,000.01 exceeds credit amount USD 100,000.00."

Failure Mode 3: Refusal notice vague about invoice discrepancy

The bank sends a refusal notice stating "invoice discrepant" without specifying the nature of the discrepancy. Under Article 16(c), the notice must list each discrepancy. A vague notice may be deemed non-compliant.

Failure Mode 4: Applicant waives invoice discrepancy

The applicant agrees to waive the invoice discrepancy. Under Article 16(b), the bank may honour or negotiate if the applicant authorises it. The waiver must be documented.

Failure Mode 5: Bank discovers additional invoice discrepancy after notice

The bank issues a refusal notice listing one invoice discrepancy but discovers another after sending the notice. Under Article 16(c), the notice must list each discrepancy. The bank may not add discrepancies after the notice is sent.

Deterministic Resolution Architecture

  1. Identify all invoice discrepancies. Review the invoice against Article 18 and ISBP 745 A20–A25. List every discrepancy — description, amount, currency, applicant name, dates, trade terms.

  2. Draft the refusal notice. Under Article 16(c), the notice must state refusal and list each discrepancy. Be specific: "Invoice description 'Type A widgets' does not correspond with credit description 'Type B widgets.'"

  3. Send the notice within five banking days. Track the period from the day of presentation. The notice must be sent by expeditious means under Article 16(d).

  4. Document the examination. Record the specific Article 18 requirements checked and the discrepancies found. This creates an audit trail.

  5. Address applicant waiver. If the applicant agrees to waive the discrepancy, document the waiver and proceed under Article 16(b).

  6. Handle the documents. Under Article 16(e), the bank may return the documents at any time after refusal.

  7. Verify the refusal notice is complete. Before sending, confirm that every identified discrepancy is listed.

  8. Monitor the five-day period. If the notice is not sent within five banking days, the presentation is deemed accepted.

Implementation Checklist

Control Evidence
All discrepancies identified Every invoice discrepancy listed
Notice specific Each discrepancy clearly described with amounts/descriptions
Notice timely Notice sent within five banking days
Expeditious means Notice sent by telecommunication or other expeditious means
Examination documented Invoice examination record retained
Applicant waiver addressed Waiver request and response documented
Documents handled Decision made whether to return or hold documents
Notice complete All discrepancies confirmed listed before sending

Conclusion

Invoice discrepancies are the most common reason for refusal under UCP 600. When a discrepancy is found, the bank must follow the Article 16 refusal procedure: draft a specific refusal notice, list all discrepancies with exact amounts and descriptions, and send the notice within five banking days by expeditious means. Failure to follow this procedure results in the bank being precluded from refusing under Article 16(f).

The correct process is not "tell the beneficiary the invoice is wrong." It is to draft a specific refusal notice, list every discrepancy with precise detail, and send it within the required timeframe by the required means.

FAQ

Can the bank refuse based on an invoice discrepancy after five days?

No. Under Article 16(f), if the notice is not sent within five banking days, the presentation is deemed accepted. The bank must honour or negotiate.

Does the refusal notice need to state the exact amount of the overage?

Article 16(c) requires the notice to list each discrepancy clearly. Stating the exact amount of the overage is the clearest way to communicate the discrepancy. A vague reference may be deemed insufficient.

Can the bank add discrepancies after the refusal notice is sent?

No. Article 16(c) requires a single notice listing each discrepancy. Adding discrepancies after the notice may be precluded.

What if the applicant waives the invoice discrepancy?

Under Article 16(b), the bank may honour or negotiate if the applicant authorises it. The waiver must be documented.

Can the bank hold the documents pending applicant waiver?

Yes. Article 16(e) states that the bank may return the documents at any time. The bank may hold them pending a waiver decision.

Source Notes

Did You Know?

Article 16(c) requires the notice to list each discrepancy clearly.

Regulatory Reference Table
RegulationArticle / SectionRequirementConsequence
UCP 600Article 16Discrepant Documents, Waiver and NoticeBinary determination (compliant/discrepant)
UCP 600Article 18Commercial InvoiceBinary determination (compliant/discrepant)

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Quick Reference Summary

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Compliance Checklist

0 of 7 completed
Bank Expectations vs Common Beneficiary Mistakes
✓ What Banks Expect✗ What Beneficiaries Often Do Wrong
Description mismatch — refusal requiredThe invoice states "Type A widgets" while the credit states "Type B widgets." Under ISBP 745 A20,...
Amount exceeds credit — refusal requiredThe invoice total exceeds the credit amount by any margin. Under Article 18(c), this is a discrep...
Refusal notice vague about invoice discrepancyThe bank sends a refusal notice stating "invoice discrepant" without specifying the nature of the...
Applicant waives invoice discrepancyThe applicant agrees to waive the invoice discrepancy. Under Article 16(b), the bank may honour o...
Bank discovers additional invoice discrepancy after noticeThe bank issues a refusal notice listing one invoice discrepancy but discovers another after send...

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