When a user manually adds a device to a global collection, the event shows user "System" instead of the actual username. Here is an example:
Jan 2, 2019 3:46:19 PM EST cat6 A model cat6 of type SwCiscoIOS has been added to Global Collection Test (5c2d230d-01fe-1000-1fdb-0af23bb40000). System
This is tentatively scheduled to be fixed in 10.3.2 when released.
For 10.3.0 there is patch Spectrum_10.03.00.D29
For 10.3.1 there is patch Spectrum_10.03.01.PTF_10.3.101
90+ Days - 01205072 - P2 - RELX INC. - Created by User is for GC Device different in two Systems
Please open a ticket at our http://support.ca.com site and request the above patch(es) if needed.