title: "UCP 600 Article 31: Instalment Shipment Compliance"
slug: ucp-600-article-31-instalment-shipment-compliance
date: 2026-07-15
author: DraftLC Research
category: UCP 600
reading_time: 8 min
regulatory_ref: UCP 600 Article 31

UCP 600 Article 31: Instalment Shipment Compliance

Introduction

When a documentary credit authorises partial shipments, each instalment operates as a separate draw under the credit. UCP 600 Article 31 sets out how banks must handle instalment shipments that arrive separately, each carrying its own presentation window, expiry, and examination obligations. Misunderstanding these rules leads to delayed payments, refused presentations, and disputes between issuing and advising banks. This guide explains the compliance framework, identifies common failure points, and provides a resolution path for practitioners handling split-shipment credits.

Failure Mode Analysis

Failure Mode 1: Applying the Aggregate Tolerance to Individual Shipments

Banks sometimes calculate the 5% tolerance against the total credit amount rather than each individual instalment. When a credit is for USD 100,000 with three equal shipments, the tolerance applies per shipment (USD 5,000 each), not across the total. An aggregate calculation reduces each party's allowable variance and creates unnecessary discrepancies.

Failure Mode 2: Treating Late Shipment of One Instalment as Credit Non-Compliance

When one instalment ships after its designated period, practitioners sometimes treat the entire credit as breached. Article 31 separates each instalment: late shipment of one does not automatically disqualify other shipments that comply with their respective windows. The non-compliant instalment stands on its own; the remaining instalments retain their validity.

Failure Mode 3: Mixing Expiry Dates Across Instalments

If the credit specifies individual expiry dates per shipment, documents for each instalment must be presented within the window applicable to that instalment. Presenting documents for the first shipment under the second shipment's expiry date is a discrepancy, even if the documents are otherwise in order.

Failure Mode 4: Omitting Transport Documents for Individual Shipments

Each instalment typically requires its own transport document (bill of lading, air waybill, or road transport document) showing shipment within the applicable period. Presenting a single consolidated transport document for all instalments, when the credit calls for separate shipment documents per instalment, creates a compliance gap.

Failure Mode 5: Failing to Reference the Instalment in the Commercial Invoice

Some credits require the commercial invoice to identify which shipment or lot is being presented. When the invoice does not reference the shipment number or date range, the examining bank cannot confirm that the invoice matches the transport document for that instalment.

Deterministic Resolution Architecture

1. Map each instalment to its conditions. Before preparing documents, identify the amount, tolerance, shipment window, and expiry date applicable to each instalment. Create a checklist per shipment.

2. Apply tolerance per shipment. Calculate the 5% more-or-less tolerance independently for each instalment. Do not aggregate tolerance across shipments.

3. Verify transport document dates. Confirm each transport document shows a date of shipment within the window designated for that particular instalment.

4. Match invoice to shipment. Ensure the commercial invoice references the correct instalment, lot number, or shipment sequence. Where the credit requires it, include the instalment identifier on the invoice.

5. Check expiry compliance per instalment. Confirm that documents for each instalment are presented before the expiry date applicable to that shipment. Where a single expiry applies, all instalments must be presented before that date.

6. Prepare separate presentation packages. Each instalment should arrive as a distinct presentation with its own covering letter, document set, and reference to the specific credit conditions it satisfies.

7. Review the credit for instalment-specific conditions. Some credits impose additional requirements per instalment (specific document types, additional certificates, particular endorsements). Map these before document preparation.

8. Coordinate with the advising bank. Where multiple presentations are expected, communicate with the advising bank to confirm that each presentation will be examined independently and that there are no procedural restrictions on sequential filings.

9. Document the compliance record. Maintain a log showing the instalment number, presentation date, amount presented, transport document date, and any discrepancies raised. This record supports dispute resolution if a bank later challenges an instalment.

Conclusion

Article 31 ensures that each instalment under a documentary credit operates as an independent transaction with its own compliance requirements. Practitioners who treat each shipment as a standalone presentation — with separate tolerance calculations, transport document verification, and expiry-date tracking — avoid the most common discrepancy patterns. The key discipline is to stop viewing an instalment credit as a single obligation and start treating it as a series of linked but independent obligations.

Frequently Asked Questions

What happens if one instalment is non-compliant but the rest are in order?

The examining bank raises discrepancies only on the non-compliant instalment. The remaining instalments remain valid and must still be presented within their respective windows. The non-compliance of one instalment does not extinguish the beneficiary's right to draw under the remaining instalments.

Can the issuing bank amend the credit to change instalment amounts?

Yes. Any amendment to instalment amounts, timing, or conditions requires the consent of all parties, including the beneficiary, under Article 10. Once accepted, the amended conditions apply to subsequent instalments.

Does a tolerance of 5% apply to the total credit amount or each instalment?

The tolerance applies to each instalment independently. If the credit is for USD 200,000 in four shipments of USD 50,000 each, the 5% tolerance allows each shipment to be between USD 47,500 and USD 52,500.

What if the transport document covers all shipments in a single document?

If the credit requires separate transport documents per instalment, a single consolidated transport document does not satisfy the requirement. If the credit is silent on this point, a single transport document may be acceptable provided it covers each instalment's shipment within the applicable period.

Can the beneficiary present documents for multiple instalments in one filing?

UCP 600 does not prohibit combining presentations, but each instalment's documents must still satisfy the conditions applicable to that shipment. The examining bank treats combined presentations as multiple separate inspections. In practice, separate filings are clearer and reduce the risk of confusion during examination.

Source Notes

Context only. The following sources were identified during topic research. They provide operational context for this guide but are not the regulatory authority. Canonical authority is UCP 600, published by ICC.

• ICC Academy — "Documentary credits: Rules, guidelines & terminology" (published 2025-07-05). Context: ICC Academy reference material on documentary credit rules and terminology. Publisher: ICC Academy.
• ICC | International Chamber of Commerce — "UCP 600 — Uniform Rules and Practice for Documentary Credits — Including eUCP Version 2.1" (published 2023-07-31). Context: Official UCP 600 publication listing. Publisher: ICC.
• ICC Academy — "Uniform Rules for Documentary Credits (UCP 600) — eBook" (published 2024-12-12). Context: ICC Academy eBook format of UCP 600 rules. Publisher: ICC Academy.
• ICC Academy — "Certified UCP 600 Specialist (CUCP)" (published 2025-07-12). Context: ICC Academy certification program for UCP 600 specialists. Publisher: ICC Academy.
• ICC | International Chamber of Commerce — "Commentary on UCP 600" (published 2019-08-01). Context: ICC commentary providing interpretive guidance on UCP 600 articles. Publisher: ICC.