Reason Code P05: Incorrect Charge Amount

The merchant processed a different amount from what they got authorization for/the cardholder agreed to.

• The merchant made an error in calculating or entering the transaction amount.
• The merchant altered the transaction amount by adding a tip or gratuity. 
• The merchant switched the original transaction amount without the cardholder’s consent.

• Always double-check the final transaction amount.
• Never change the transaction amount without the cardholder's permission.