What Mastercard Reason Code 4834 Means for Merchants

Mastercard reason code 4834 is Point-of-Interaction Error. It is one of four Mastercard dispute groups. It covers claims that something went wrong with the details of a sale. Most 4834 chargebacks say one of two things. The cardholder paid twice for the same purchase. Or the cardholder was billed the wrong amount. Your reply needs to match the claim. The same proof will not answer both.

What is Mastercard reason code 4834?

A 4834 chargeback starts with a cardholder claim. The claim says something was wrong with the sale itself. The card is not reported stolen and the sale is not called fraud. Instead, the cardholder says the charge is wrong in some way.

Mastercard sorts its chargebacks into four groups: Authorization, Cardholder disputes, Fraud, and Point-of-Interaction Error. Code 4834 is the code for the fourth group. An issuer may start a chargeback when the transaction meets the rules of a reason code. So the claim has to fit what 4834 describes.

If you are not sure where to find the code on your notice, start with how to read a chargeback notice.

Common reasons for a 4834 chargeback

Two claims make up most 4834 disputes.

The first is a double charge. The cardholder says one purchase produced two charges. This happens when a terminal sends the same sale through twice, or when a customer pays, thinks it failed, and pays again.

The second is an incorrect amount. The cardholder says the amount billed does not match what was agreed. Maybe the wrong price was keyed in, or a tip or extra item was added by mistake.

Read the notice closely. The claim tells you which records to gather, and a reply that does not fit the claim will not help you.

How to respond to a 4834 chargeback

For a double charge claim, show that the two charges were two valid, separate transactions. Send records for both sales. Include receipts, order details, and timestamps. Show that each sale was a different purchase. If the two charges really were the same sale sent twice, accept the chargeback and refund the extra charge. Fighting a real duplicate only drags out a case you will lose.

For an incorrect amount claim, show what the cardholder agreed to pay. A signed receipt, an order confirmation, or a price quote that matches the billed amount is strong proof. If you did bill the wrong amount, fix it and let the chargeback stand.

One more thing to check. Say the cardholder got a chargeback credit and a refund from you. Then the acquirer must second present showing the refund. That means the cardholder was paid twice for one purchase, and you should flag it to your processor.

Related Mastercard reason codes

4834 is not the only Mastercard code a merchant sees. A four digit number like 4837 or 4853 on your notice points to a different claim. That claim sits in a different group. Each code has its own rules and its own kind of proof, so always check the exact code before you build a reply. Never assume a code means the same thing as another network's code.

What happens after the chargeback?

Your reply is one step, not the end. The acquirer may second present when the chargeback did not meet the reason code rules. It can also answer the original dispute. The issuer gets only one chargeback for each presented transaction amount.

If the issuer wants to keep going, it can file a pre-arbitration case. After that, it can file an arbitration case. If the acquirer takes no action on a pre-arbitration case, it accepts financial responsibility for the transaction. The acquirer may reject a pre-arbitration case with a rebuttal and any relevant documents. Once a pre-arbitration or arbitration case is filed, Mastercard ignores second presentment papers that arrive after that. When the issuer and acquirer cannot resolve an arbitration case, Mastercard decides who is responsible.

So send your documents early, and keep copies of everything. For a fuller walk through of each round, see what happens after you answer a chargeback.

Sources

• dm.mastercard.us