The system setting indicates that it supports only {1} source mailboxes in a mailbox search. You have specified {0} source ...

The system setting indicates that it supports only {1} source mailboxes in a mailbox search. You have specified {0} source mailboxes. You can use In-Place Hold for all these mailboxes, but you won't be able to start an In-Place eDiscovery search. Do you want to continue?