Discover reason code
Discover reason code DP: Duplicate Processing
The cardholder was charged more than once for the same transaction.
Network: DiscoverCategory: Processing ErrorResponse window: ~30 days
What Discover DP means
Discover DP is duplicate processing: the cardholder was charged more than once for the same transaction.
When issuers use it
Discover files DP when multiple charges appear for a single purchase.
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.