Discover Chargeback Reason Code
Discover Reason Code 4586: Altered Amount
Category Processing ErrorsBy Payment Defender Editorial TeamUpdated July 17, 2026Last reviewed July 17, 2026
Discover exception code documented through the cited processing documentation. Available codes and descriptions may vary by processor, acquirer, program, region, and current Discover Network rules.
This directory contains Discover exception codes verified through the cited processing documentation. Available codes and descriptions may vary by processor, acquirer, program, region, and current Discover Network rules.
What Discover Reason Code 4586 Means
Discover reason code 4586 identifies a dispute in which the cardholder claims the transaction amount was altered after the purchase, so the amount billed differs from the amount they agreed to pay.
Why This Chargeback Happens
This dispute commonly occurs from keying errors, tip or adjustment mistakes, or discrepancies between the authorized amount and the amount ultimately settled.
What the Cardholder or Issuer Is Claiming
The cardholder claims the final transaction amount was changed and does not match the amount originally authorized or agreed.
What Merchants Should Review
Review the authorized amount, the settled amount, any documented adjustments such as tips or partial shipments, and the receipt or agreement the cardholder accepted.
Recommended Chargeback Evidence
- The signed receipt or authorization showing the agreed amount
- Documentation of any legitimate adjustment to the amount
- Records reconciling the authorized and settled amounts
How to Prevent Similar Disputes
Altered-amount disputes may be reduced by settling the exact authorized amount, documenting adjustments clearly, and confirming totals with customers before final submission.
Important Limitations
This page is educational and reflects commonly documented usage. Discover dispute rules, timelines, and evidence requirements change over time and may vary by processor, acquirer, program, and region. Merchants should confirm current requirements with their acquirer or processor before responding.
Related Reason Codes
Sources and Review Information
Last reviewed July 17, 2026
Chargeback rules, evidence requirements, and response options may vary by card network, region, processor, and dispute circumstances.