The registration methods that automatically place a device in its assigned ADOM are using the serial
number and fabric authorization. When devices are added to FortiAnalyzer using these methods,
they are automatically placed in the appropriate ADOM, which could be a default ADOM based on
the device type or a predefined ADOM based on the serial number or fabric authorization. This
simplifies the management of devices and their logs by organizing them into their respective ADOMs
from the moment they are registered.
Reference: FortiAnalyzer 7.4.1 Administration Guide, "Default device type ADOMs" and "Assigning
devices to an ADOM" sections.