Defines whether to display only predefined accounts on checkin and search pages.
When set to TRUE, only predefined accounts appear in the Accounts option list on checkin and search pages.
When set to FALSE, any user-defined accounts that the user belongs to are also displayed in the option list.
Default is an empty string.
System Properties, Content Security tab, Show only known accounts
Admin Server, Content Security, Show only known accounts
Used as a configuration entry: