I got the note that "Someone else has already nominated the tag Hope Mikaelson/Lizzie Saltzman for this set but in fandom Legacies (TV 2018). (All nominations have to be unique for the approval process to work.) Try making your nomination more specific, for instance tacking on (The Vampire Diaries & Related Fandoms)."

Just so you know, anyway. I'll add a disambiguation tag on when I nominate Hope/Lizzie under "The Vampire Diaries & Related Fandoms," but it'll probably be a shorter disambiguation tag, like (Legacies).