Chargeback Reason Codes

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American Express Chargeback Reason Code P23: Processing Errors

chargeback reason code p23

Table of Contents

  1. What is American Express chargeback reason code P23?
  2. What causes code P23 chargebacks?
  3. What's the time limit to respond to code P23 chargebacks?
  4. How can merchants fight code P23 chargebacks?
  5. How can merchants prevent code P23 chargebacks?
  6. About American Express chargeback reason codes

Merchants who receive a chargeback for a transaction placed with an American Express card may encounter reason code P23, which indicates a transaction that was not processed correctly by the merchant. The actual underlying cause of this chargeback is usually merchant error, but it may be associated with friendly fraud as well. Merchants who believe they have received an invalid chargeback under reason code P23 may be able to represent the transaction and reverse the chargeback with the right compelling evidence.

What is American Express chargeback reason code P23?

The shorthand description for American Express chargeback reason code P23 is “Currency Discrepancy.” This means that the merchant did not use the correct form of currency when processing the transaction, resulting in an erroneous charge amount or an unfavorable conversion rate for the customer.

Many domestic merchants will never have to worry about encountering chargebacks with this reason code, but it can cause lots of problems for merchants who deal with a high number of international customers.

What causes code P23 chargebacks?

Merchant error is the most common cause of this chargeback reason. They may select the wrong currency type when processing the transaction, resulting in the customer being charged the wrong amount.

This is more likely to happen with merchants who rarely deal with foreign currencies and aren't used to processing transactions that involve currency conversion. Sometimes, merchants will use dynamic currency conversion without getting the customer’s permission first. This practice is prohibited by the card networks, but merchants still do it out of neglect or forgetfulness on occasion, and customers don’t always understand the implications of dynamic currency conversion when it isn’t sufficiently explained to them.

Sometimes, a customer may forget what currency they used to pay for a purchase, which may lead to them mistakenly filing a friendly fraud chargeback. A customer might also purposefully commit friendly fraud if they realize that the conversion rate caused them to pay a higher price for a product than they initially assumed.

Services like dynamic currency conversion often charge a higher conversion rate that may cause the total transaction amount to be significantly greater than what the customer was expecting, which can lead to buyer’s remorse and subsequent disputes.

Get the guide, Chargebacks 101: Understanding Chargebacks & Their Root Causes

What's the time limit to respond to code P23 chargebacks?

The acquirer or merchant has 20 days to respond to a chargeback filed under reason code P23.

How can merchants fight code P23 chargebacks?

  • If currency conversion did not occur or was authorized, provide documentation that clearly shows this.
  • If you have already processed a refund for the transaction in question, you can fight this chargeback by providing documentation that proves you have credited the cardholder’s account.

How can merchants prevent code P23 chargebacks?

Whether you’re using dynamic currency conversion or some other method of accepting international currency, you need to have a thorough understanding of the rules, procedures, and costs, and explain them carefully to your customers before completing a transaction with them.

The following suggestions can help you avoid disputes related to international currency conversion and protect your revenue from any chargebacks that might otherwise result:

  • Have systems in place to manage multiple currencies, especially if this is something your store frequently has to deal with. Make sure staff are well-trained on procedures related to payments using international currencies.
  • Don’t automatically convert currencies for international shoppers. Allow customers to opt-in to conversion services such as dynamic currency conversion if they are interested, but don’t require their use.

About American Express chargeback reason codes

Reason codes are alphanumeric codes that provide the justification for granting a chargeback. Pursuant to the Fair Credit Billing Act of 1974, cardholders have the right to dispute unauthorized or erroneous charges, and issuing banks must reverse a disputed transaction if the cardholder’s claim is valid.

When a cardholder contacts their issuing bank to dispute a transaction and receive a chargeback, the dispute is assigned a reason code that most closely matches the substance of the cardholder’s claims. The reason code provides the merchant and other stakeholders in the dispute with a concise explanation for why a chargeback has been granted.

Each card network—Visa, Mastercard, American Express, and Discover—defines and maintains their own unique set of reason codes, which are applied to disputes by the banks that issue credit and debit cards under their brands.

As both a card network and an issuer, American Express specifies 34 reason codes under the categories of Fraud, Authorization, Processing Errors, Card Member Disputes, and Inquiry/Miscellaneous. Each American Express reason code consists of one or more letters, indicating the category, and a number that identifies the specific dispute reason.

Understanding chargeback reason codes is one of the most essential parts of effective chargeback management. Identifying the chargeback reason code and the evidence required to fight it is the first step in chargeback representment, and analyzing your chargeback reason codes can provide you with insights into what types of disputes are causing you the most trouble. With this information, you can determine the root causes of your chargebacks and take action to prevent them from reoccurring.