With each chargeback the issuer selects and submits a numeric reason code. This feedback may help the merchant and acquirer diagnose errors and improve customer satisfaction. Reason codes vary by bank network, but fall in four general categories: • Technical: Expired authorization,
non-sufficient funds, or bank processing error. • Clerical: Duplicate billing, incorrect amount billed, or refund never issued. • Quality: Consumer claims to have never received the goods as promised at the time of purchase. • Fraud: Consumer claims they did not authorize the purchase or was a victim of
identity theft. One of the most common reasons for a chargeback is a fraudulent transaction. In this case, a credit card is used without the consent or proper authorization of the card holder. In some cases, a merchant is responsible for charges fraudulently imposed on a customer. Fraudulent card transactions often originate with criminals who gain access to secure payment card data and set up schemes to exploit the data. In cases of
card not present transactions the merchant is usually responsible for the chargeback and associated fees. After the adoption of
EMV (cards with a chip in them), merchants who have not upgraded to EMV technology usually become liable for chargebacks received (unless others in the payment chain have also not upgraded) even in cases where prior to EMV adoption the merchant would not have been liable. Chargebacks can result from not receiving credit for returned merchandise, not receiving items they have paid for, or if the items were not what they expected. In these examples, the merchant is responsible for issuing credit to its customer and would be subject to a chargeback. Other reasons include charging the consumer twice for a single
transaction or charging an account after the bank declined the transaction. == Merchant recourse ==