Liverpool have been charged by the Football Association with failing to control their players during Saturday's 4-1 defeat at Manchester City.
Several Liverpool players crowded around referee Simon Hooper as they pleaded for him to show City midfielder Rodri a second yellow card for a challenge on Cody Gakpo.
"Liverpool FC has been charged after its players surrounded a match official during the 34th minute of their Premier League game against Manchester City FC," the FA said in a statement on Thursday.
"It's alleged that Liverpool FC failed to ensure its players conducted themselves in an orderly fashion and/or do not behave in a way which is improper."
Liverpool have until April 12 to respond to the charges. They are in eighth place in the league table and next host leaders Arsenal on Sunday.