If you see the following authentication error when you press the "Authentication" button to apply for your documents, it may be due to the following.

[Error Message]

If you are authenticating with a code, please check the code you have entered.
If you are authenticating with a mobile device, please try again or re-register your device by clicking "Register" button on the home screen before trying again.

[Causes and Solutions]

Causes Solutions
Took more than 5 minutes to authenticate (exceeded the time limit) Return to the application page and try the authentication again.
Using a web browser different from when you last registered your mobile device. Register your mobile device again and apply.
  • *Even if the Registration Status of mobile device is Registered, you may need to register the device again.
Have changed to a new model