Why is the third dose of vaccine not recorded?

Generally speaking, a few hours after the third vaccination, it can be displayed on the Internet, such as the health code. But sometimes due to the delay of information, it may take some time for the system to update the information; If the information is not displayed after waiting for a long time, it may be because the information of the registrant was not recorded in the system when the third injection was made. In this case, it is recommended to consult the hospital that has been vaccinated.