Mastercard 4831 — Disputed Amount

What it means

The cardholder disputes the transaction amount — it differs from what they agreed to pay or from the authorized amount.

Common causes

• Incorrect total charged at checkout or terminal
• Unauthorized tip, fee, or surcharge added
• Partial capture exceeding authorized amount

Evidence that helps you win

• Invoice and receipt matching settled amount
• Authorization record for the same amount
• Customer email confirmation of order total
• Refund record if adjustment was made