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How to brief a sourcing agent with unclear requirements

Give the agent your intended use, reference material, commercial constraints and unresolved choices. Ask for a discovery brief that separates confirmed requirements from assumptions and sets out what factory enquiries may investigate. Approve that brief before suppliers are contacted. You can use this approach when briefing Cambridge China Bridge.

Written by Bono Xu, Founder, Cambridge China Bridge · 4 min read · Updated 2026-10-06

A leather folder, notebooks and a pen laid out on a wooden desk

Start with the problem you need to solve

Send a description of who will use the product, what they need it to do, where it will be used and what would make it unsuitable. Include photographs, sketches, existing samples, customer feedback and previous failed attempts. Label each attachment with what it illustrates: appearance, function, fit or a problem to avoid. A reference product should not silently become the specification.

State what you already know and what you need help deciding. An uncertain brief is useful when its gaps are visible. Our guide to briefing a sourcing agent explains how to ask for evidence of factory capability once that capability has been defined; this stage establishes what to investigate.

Answer the discovery questions

Ask the agent to explore: who is the end user? What task must the product perform? What does it need to fit or connect to? What conditions will it face? Which defects would make it unusable? Which features are essential, desirable or negotiable? Describe acceptable performance in terms someone could observe or test, rather than asking for good quality.

Explain the intended sales destination and channel, branding, packaging, delivery destination, budget basis and required availability. Distinguish an initial purchase from hoped-for repeat demand. If quantity or budget is unsettled, explain what decision will settle it. Name the person who can approve compromises and identify whether function, appearance, cost or availability takes priority.

Turn assumptions into investigation tasks

Ask for an assumptions register. Each entry should state the assumption, its source, the consequence if it is wrong, the evidence needed and who will resolve it. Mark entries as confirmed, provisional or unknown. For example, a photograph may suggest a material, but it does not establish composition or suitability for your intended use.

Separate questions to resolve with your customers or designer from questions factories can answer. Product safety also belongs here: UK consumer-product sellers must not sell products they know, or should have known, are unsafe. Use the UK compliance finder to start investigating the intended product and destination; record unanswered questions rather than treating a supplier's certificate as the answer.

Examples of assumptions to investigate before choosing a factory
Provisional assumptionInvestigationEvidence to request
The reference material is essentialEstablish whether the need concerns appearance, strength or another functionBuyer-approved performance criteria and material options
An existing product can meet the needCompare an existing design with modification or new developmentA documented gap assessment against the intended use
Demand will support the proposed purchaseSeparate committed demand from a sales forecastBuyer-confirmed purchase scope and stock constraints
The packaging suits the delivery routeIdentify storage, handling and final delivery conditionsAn agreed packaging brief with unresolved checks listed

Approve the discovery brief before enquiries

The deliverable should be a dated discovery brief containing the intended use, confirmed requirements, negotiable features, exclusions, commercial constraints, annotated references and assumptions register. It should propose the sourcing route: an existing product, a modified product or product development. Each unresolved question should have an owner and a proposed way to obtain evidence.

Include an enquiry scope stating what factories may be asked, which alternatives they may propose and what information may be shared. Identify unknowns that block enquiries and those enquiries are authorised to investigate. Approve the brief and its attachments in writing before any factory approach, including informal feasibility questions. Return it for revision if the agent has silently chosen a material, design or cost basis.

Keep later enquiries tied to the approved brief

Approval authorises the agreed investigation; it does not approve tooling, samples or production. Ask the agent to send the same approved enquiry basis to relevant factories and record deviations separately. If a reply changes an essential requirement, bring the choice back to you and revise the brief before continuing on that changed basis.

Request a findings report that distinguishes supported conclusions, supplier claims and remaining unknowns. It should recommend proceeding, revising the requirement or stopping, with reasons. Once you can describe a comparable request, use our guide to writing a factory enquiry. Keep the discovery brief as the record of why that request was chosen.

Frequently asked questions

Can I contact a sourcing agent without a specification?

Yes. Send the intended use, references, constraints and open questions. Ask for a discovery brief to approve before factory contact, rather than expecting comparable quotations immediately.

What if I do not know my order quantity or budget?

Explain what will determine them, such as customer commitments or available stock space. Mark them as unresolved and agree which purchase scenarios the agent may investigate.

Can factories help decide the specification?

They can explain capabilities and alternatives after you approve the enquiry scope. Their suggestions should be recorded as proposals for your decision, not silently adopted as requirements.

What should I approve before supplier enquiries?

Approve the dated discovery brief, attachments, assumptions register and enquiry scope. Confirm essential requirements, permitted alternatives, information to share and questions that must be resolved first.

Sources

  1. GOV.UK: Product safety advice for businesses

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