Mastercard reason code
Mastercard reason code 4834: Point-of-Interaction Error
Duplicate charges and incorrect amounts caused by processing mistakes.
Network: MastercardCategory: Point-of-Interaction ErrorResponse window: ~45 days
What Mastercard 4834 means
Mastercard 4834 is a point-of-interaction error, including duplicate charges and incorrect amounts caused by processing mistakes.
When issuers use it
Issuers raise 4834 when the cardholder was charged twice, charged the wrong amount, or a similar processing error occurs.
Mistakes that lose this dispute
- Billing the same invoice twice
- Keeping no transaction IDs to distinguish charges
FAQ
Frequently asked questions
The customer says they were charged twice. What do I do?
If the charges are for different services, show the separate invoices and transaction IDs. If it was a genuine duplicate, refund it rather than fight it.
How do I prevent duplicate charges?
Use unique invoice and transaction references, and reconcile settlements so the same charge is never captured twice.