return_code | string | Error code, see the public definition [Public error code](https://pay.weixin.qq.com/Wiki/doc/wxfacepay/develop/sdk-android.html#Public error code) |
err_code | string | Nullable, second-level error code, public definition in [Second level error code](https://pay.weixin.qq.com/Wiki/doc/wxfacepay/develop/sdk-android.html#Second level error code) |
return_msg | number | Description of the error code |
face_code | string | Evidence of the face, For Brush Face Payment |
openid | string | Openid (equivalent to user identity) |
sub_openid | string | Under the sub-merchant number. openid ( Service provider model ) |
underage_state | number | User age information, use need to contact WeChat payment to open permissions Value: 0 - stateClear, or permissions are not opened 1 - adultpeople 2 - minor |