Error codes

The following table lists the error codes that the callbacks may return.

Code	Constant	Description
`1001`	`ResultCode.PARAM_ILLEGAL`	Invalid or illegal parameter.
`1002`	`ResultCode.INVALID_NETWORK`	Network is unavailable.
`1003`	`ResultCode.SYSTEM_ERROR`	Internal system error.
`1004`	`ResultCode.USER_CANCEL`	User canceled the operation.
`1006`	`ResultCode.USER_DENY`	User denied the required permission.
`2001`	`ResultCode.PAYMENT_FAILED`	Payment failed.

Note: The onFailure callback is invoked with these predefined codes. Defining custom error codes is not supported.