There's lot of information about the Automated Process User in Salesforce where it's used to make automated system-level changes by Salesforce.
However, I noticed that we also had a user called System that is similarly inaccessible like Automated Process.
I can query the user in SOQL to get the userId but I'm not able to view the full user details in the UI and it shares the same ProfileId as the Automated User.
SELECT Id,ProfileId FROM User WHERE Name = 'System' OR Name = 'Automated Process'
The email contains
automatedcase@[ourORGID].ext and the only scenario I see with a reference to the user is under
Support Settings where you can select the
Automated Case User to be
System. Weirdly, the Salesforce doc on Automated Case User only mentions the ability to select a user through the lookup (and makes no mention of the dropdown to select "System").
However, this doc does make mention of the above selection for System, but the reasoning seems like it oddly could've been handled by the "Automated Process" user since it's to indicate an automated process.
That may be its only purpose, but I'm having a hard time finding any information on this user otherwise - most likely due to the fact that the name "System" is a little non-specific. I see the following idea that mentions the user being invisible to sharing rules which again is related to the Automated Case User workflow above.
We do not use this user as the Automated Case User so is there no other purpose or documentation concerning usage for this user? Is it right to assume Automated Process user handles "other" system-level changes while this System user is only concerning automation on cases?