PRINTING SYSTEM, PRINTING APPARATUS, AND CONTROL METHOD OF PRINTING APPARATUS

When performing authenticated printing, an administrator must minutely grasp the consistency between account registered information held by a printer and account information input by each user, and this complicates an updating work. In addition, the user cannot perform printing if this updating work is not performed. In an embodiment of the present invention, therefore, the administrator sets a secondary identifier group updatable by a user, and the account registered information is automatically updated based on the account information input by the user.