Discover Reason Codes

Understanding Discover Reason Codes

Each Discover reason code represents a specific dispute category raised by cardholders. Understanding these codes helps merchants identify dispute trends, reduce risk exposure, and take proactive steps to prevent revenue loss from chargebacks.

Total Reason Codes

25 Active Codes

Average Win Rate

65% Success Rate

Prevention Rate

Up to 85%

Referral Partner

Complete reference guide for chargeback reason codes

CodeDescriptionHow To Win
AACardholder Does Not Recognize
ALAirline Transaction Dispute
CACash Advance Dispute
CDCredit Posted as Card Sale
DADeclined Authorization
DPDuplicate Processing
EXExpired Card
ICIllegible Sales Data
INInvalid Card Number
LPLate Presentment
NDiscover Network ATM Transaction – No Funds Dispensed
NANo Authorization
NCNot Classified
PDiscover Network ATM Transaction – Partial Funds Dispensed
RGNon-Receipt of Goods or Services
RMCardholder Disputes Quality of Goods or Services
RN2 Or RNNon-Receipt of Credit
UA01No Authorization
UA02Declined Authorization
UA10Request Transaction Receipt for Swiped Card Transaction
UA11Swiped Card Transaction – No Cardholder Signature Obtained
UA12Swiped Card Transaction – Invalid Signature
UA18Swiped Card Transaction – Illegible Transaction Documentation
UA20Request Transaction Documentation for Keyed Card Transaction.
UA30Request Transaction Documentation for Card Not Present Card Transaction

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Saturday: 10:00 AM - 4:00 PM
Sunday: Closed

Frequently
Asked Questions

To answer common concerns and reduce hesitation from potential users.

What are Discover Reason Codes?

Discover Reason Codes are numeric identifiers that explain why a transaction was disputed or charged back on a Discover card.

Why should merchants understand these codes?

They help you identify the dispute cause so you can respond correctly and prevent similar future chargebacks.

Does every Discover chargeback include a reason code?

Yes — each chargeback from Discover comes with a specific reason code indicating the dispute category.

Can understanding these codes improve my dispute outcomes?

Yes — knowing the exact code lets you tailor evidence and increase your chances of winning representment.