The health code is registered, but it does not exist. Reason:
Unable to get the health code because too many users apply at the same time. You can try again later. If the network is not very stable at the time of application, the acquisition will also fail.
Be sure to note that you must bind your mobile phone number to get your own health code.
The "health pass code" is based on real data, which can be generated by citizens or people who have returned to work through their own online declaration and background check. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city.