How do I dispute a chargeback?

Identify the reason code, pull the evidence that contradicts it, and file through the retailer’s vendor portal inside the dispute window. Most portals require the deduction number, the original purchase order, and proof of compliance — a delivery receipt, an ASN transmission log, a signed bill of lading. Partial disputes are allowed where only part of a claim is wrong.

Disputes succeed on documentation. Argument on its own loses. A claim that the ASN was sent on time is worth nothing without the timestamped transmission record attached to it.

More on Chargebacks & Deductions, or browse every commerce operations answer.