Testing Credit Card Purchases
Card Purchases
Coinflow provides a set of test credit cards that can be used to test a purchase on sandbox. You may use any CVV, address, name, and future expiration date with the below numbers to simulate a successful purchase. To simulate a failed purchase, set the card zipcode to 99999. To simulate a rejected chargeback protection decision, set the card zipcode to 00000.
3DS Enabled Card Purchases
Merchants who have 3DS configured can use the below test cards on sandbox to test different 3DS challenge scenarios.
Note: When testing a friction challenge, you may use any number as the 2FA.
3DS Testing with Amounts
Alternatively, you can trigger specific 3DS scenarios using any test card by setting the last two digits of the subtotal (in cents) to specific values:
This allows you to test different 3DS flows without needing to switch between different test card numbers.
Testing on Production
When testing in production it is important to adhere to the following guidelines:
- Totals for testing transactions being $2+ per transaction
- Not more than 1 purchase by same card in a 15 minute increment
- Not more than 3 test transactions per card in a day
Failure to follow these guidelines could result in your production account being suspended.

