Celtic manager Gordon Strachan has been officially charged with misconduct by the Scottish FA after being sent to the stand at Pittodrie on Sunday.
Strachan was sent off by referee Charlie Richmond on Sunday
It follows receipt by the SFA of fourth official John Underhill's report into the match against Aberdeen.
Strachan is already appealing a four-match touchline ban following an incident last season.
If found guilty following the latest incident, he faces an additional six-match ban from the sidelines.
At Pittodrie on Sunday, Strachan was ordered to leave the pitch-side by referee Charlie Richmond following an argument with an Aberdeen official.
Coach Tommy Burns claimed Strachan had been defending his assistant, Garry Pendrey, following accusations that he had made a rude gesture to the Aberdeen fans behind the dugout.
Celtic chief executive Peter Lawwell would not go into detail on the issue but said of Strachan: "We back him 100%."
This is the third time Strachan has been reported on a misconduct charge and the outcome of his appeal will determine the length of the latest ban.
He also has the right to appeal against the latest misconduct charge.
The SFA will be writing to Strachan with copies of both the fourth official's report and that of Richmond.
Strachan will have to wait for the case of his sending off during April's match against Hearts to be heard before any new punishment can be imposed.
He contested that four-match suspension and the SFA has yet to organise a hearing for his appeal.
Strachan was ordered to the stands by referee Stuart Dougal on two occasions during matches against Hearts last season, in August 2006 and in the 29 April game at Celtic Park.
Dougal was unavailable for Tuesday's scheduled hearing, which Strachan requested to appeal against the mandatory four-game ban.