| Name | Type | Description | Notes |
|---|---|---|---|
| expiry_month | decimal | One- or two-digit expiration month (1-12) of the credit card. | [optional] |
| expiry_year | decimal | Two- or four-digit number representing the card's expiration year. | [optional] |
| security_code | string | Card security code. It is highly recommended to always include this value. | [optional] |