# # CardChannelCode Card Channel Code ```php use Xendit\PaymentRequest\CardChannelCode; ``` ## Enum * `GPN` (value: `'GPN'`) * `XENDIT_ENUM_DEFAULT_FALLBACK` (value: `UNKNOWN_ENUM_VALUE`) If you encounter `UNKNOWN_ENUM_VALUE`, it means that this ENUM is unavailable in your current SDK version. Please upgrade to get the newest ENUM. [[Back to README]](../../README.md)