Supply-Chain Disputes: Preparing the Evidence for a Commercial Decision

By Sandor-Laszlo Pal · Published and reviewed 28 September 2026

A late shipment, defective component or unpaid invoice can involve several contracts and several countries. The useful first output is a reliable account of what happened, what can be proved and what remains uncertain. This briefing sets out an organisational approach for business teams; it does not decide liability.

Start with the contractual chain

Identify the seller, purchaser, manufacturer, carrier and any guarantor separately. Gather the executed contract, purchase orders, specifications, accepted terms and later variations. Record which documents each party says formed the agreement. Keep governing-law and dispute-resolution clauses beside the relevant relationship.

A parent company’s name on a presentation is not a substitute for identifying the contracting entity. Where several terms conflict, flag the issue for legal analysis rather than selecting the preferred version.

Build a chronology that links to evidence

Use a dated table: event, source, responsible person and disputed point. Include delivery commitments, inspection, acceptance or rejection, notices, remedial work and payment. Link each entry to an original record. Separate contemporaneous documents from later recollections.

Preserve original emails, attachments, system exports and relevant messaging records through an appropriate preservation process. Work from copies and retain metadata where available. Agree access and handling with the people responsible for data protection and legal privilege; a shared folder is not automatically a safe disclosure channel.

Separate performance from loss

One evidence stream concerns what was promised and delivered. Another concerns financial consequences. Keep invoices, credit notes, replacement purchases, repair records and actual payment information organised. Record currency, dates and calculation assumptions, including avoided costs and mitigation steps. A headline loss figure is a starting hypothesis, not proof.

If technical expertise is needed, identify the question the expert must answer before commissioning a broad report. This helps connect the cost of the exercise to a decision.

Make uncertainty visible

Create an issues matrix with four columns: proposition, supporting material, contrary material and gap. Include uncomfortable documents. Identify custodians who may hold missing records and assign practical retrieval steps. Distinguish an unavailable document from a document that never existed.

The UNCITRAL Notes on Organizing Arbitral Proceedings, adopted in 2016 with an additional note in 2023, provide a procedural reference covering matters including confidentiality, hearings and evidence. They are a useful planning aid; the applicable rules and tribunal directions still require separate attention.

Turn the bundle into a decision paper

The decision-maker needs more than a large archive. Provide a concise chronology, a contract map, the key issues, an initial loss schedule and a list of missing information. Explain which next action would reduce the most important uncertainty: targeted correspondence, a technical review, mediation preparation or a procedural step.

Set a budget and owner for that action. Revisit the recommendation as new evidence arrives. Good organisation supports a proportionate decision; it does not guarantee recovery or settlement.

Discuss a defined workstream

Our cross-border commercial claims support can help structure the matter for review. Request a Confidential Commercial Assessment using a short overview only. We confirm suitability, conflicts and document-transfer arrangements before substantive work.

General information. Preservation, privilege, disclosure and contractual requirements depend on the relevant facts and jurisdictions. Do not upload evidence with an initial website enquiry.