# Test payment cards, IBANs, and ACH details

Use the following payment cards, IBANs, and ACH details to simulate different outcomes in the Rebilly sandbox environment when processing payments.
These details do not generate real charges.

Payment cards
Use any future expiration date except `10/2051`.
Use any CVV except `000` (or `0000` for American Express).
For more information, see [Restricted CVV and expiration date values](#restricted-cvv-and-expiration-date-values).

CVVs are 3 digits for most payment cards and 4 digits for American Express.

IBAN
ACH
## Special cases

Use the following special cases to simulate specific transaction behaviors.

### Special approved transaction amount

To simulate an approved transaction using a special amount in the sandbox environment, use `71.00`.
This is useful for methods like Apple Pay, where you cannot control the DPAN.

### Approved test card that becomes expired

To simulate an approved transaction that becomes expired, use the following test card number: `4000000000000051`.

## Restricted CVV and expiration date values

The following special cases use restricted values for CVV and expiration date to simulate specific transaction behaviors.

### Simulate an issuer decline caused by invalid expiration date

To simulate an issuer decline caused by an invalid or mismatched expiration date, while using a valid test card number, set the expiration date to `10/2051`.
This results in a gateway response code `54` with the message "Expired card or expiration date is missing".

### Simulate an issuer decline caused by invalid CVV

To simulate an issuer decline caused by an invalid CVV, while using a valid test card number, set the CVV to `000`, or `0000` for Amex.
This results in a gateway response code `N7` with the message "Decline for CVV2 failure".