Supplier Due Diligence Checklist
Use this before payment or onboarding.
Order Control
A supplier offers one invoice for payment and another value or description for shipment. This guide helps buyers turn that moment into a clear approval file.
A dual invoice risk review should begin with the buyer decision, not with a pile of supplier messages. In this situation, a supplier offers one invoice for payment and another value or description for shipment. The buyer needs to know whether to pay, approve, ship, rework, wait, or escalate. That decision should appear at the top of the file.
This keeps the review practical. If the buyer cannot name the decision, the supplier can keep the conversation broad. Broad replies create comfort but do not prove responsibility. A one-sentence decision gives procurement, finance, and quality the same target.
The core risk is this: the buyer may inherit customs, tax, insurance, or dispute risk from documents that do not match the real transaction. Write that risk in direct language. The buyer should avoid phrases that sound careful but do not say what could go wrong. A clear risk statement helps the team decide which evidence matters and which documents only add noise.
The supplier may have a reasonable explanation. That explanation still needs a named company, a date, a product link, and a person responsible for the next step. If those details are missing, the buyer should treat the reply as incomplete rather than hostile. Incomplete evidence calls for a follow-up question before exposure grows.
Run this check whenever the supplier proposes separate invoice values, names, or descriptions. Timing changes the buyer's bargaining position. Before money, goods, or customer deadlines move, the buyer can ask for corrections without turning the issue into a dispute. After that point, weak evidence starts to look acceptable because the team wants the order to continue.
Put the trigger into the normal order workflow. It can sit in the quotation review, deposit approval, sample approval, inspection booking, balance payment release, or shipment file. A routine checkpoint gives the buyer a record without making every supplier conversation feel like an accusation.
The review should cover commercial value, customs value, product description, beneficiary, reason for split. Ask the supplier to answer each point against the order number, product model, legal company name, and date. A supplier brochure, casual photo, or general assurance should not replace an answer tied to the actual order.
A good supplier can usually answer in plain words. It can say which entity is responsible, what changed, what remains open, and what record proves the claim. A weak supplier may send extra files while leaving the question unanswered. Save that response because it explains why the buyer slowed the approval.
The file should include all invoice drafts, supplier explanation, customs broker note, payment record, rejection note. Store those records beside the quotation, supplier identity record, payment instruction, and buyer approval note. Use dated file names and short labels so a manager can understand the issue without searching through a long chat history.
Keep rejected evidence as well. A wrong document, unclear photo, mismatched name, or missing date can become important if the supplier later changes its explanation. The file should show what the buyer accepted, what it rejected, and which question remained open when the next step was approved.
The closing note should say whether the buyer proceeds, pauses, reduces exposure, requests another document, or escalates the issue. It should also name the control that makes the decision acceptable: smaller payment, staged release, inspection, rework proof, customer approval, or a new supplier confirmation.
Review the note again if the supplier changes any key fact. A new date, document, payee, delivery term, packing method, product version, or shipment route can turn an approved file into a new review. That habit keeps the buyer's position clear without writing a long report for every small order.
Buyers should run this check whenever the supplier proposes separate invoice values, names, or descriptions. That timing leaves room to ask for corrections before payment, shipment, or customer pressure narrows the options.
Save the supplier explanation, source documents, rejected evidence, internal approval note, and any condition attached to payment or shipment release.
No. It is buyer-side evidence guidance. Use qualified legal, customs, insurance, or compliance advice when the transaction requires it.
Use this before payment or onboarding.
Keep a record finance can review.
Choose the right depth for the decision.