The Scottish Football Association has confirmed the Gers manager will serve a touchline suspension after opting not to challenge his misconduct charge following Sunday’s Betfred Cup semi-final defeat Motherwell.
And Fir Park boss Robinson also faces the possibility of being banned for next month’s final with Celtic after he was also issued with a notice of complaint.
Both men have ended up in trouble following their angry row on the Hampden sidelines.
Livid Caixinha reacted furiously when Motherwell striker Ryan Bowman was allowed to escape unpunished for a challenge that left Rangers defender Fabio Cardoso with a broken nose.
Both he and Robinson ended up face-to-face as tensions threatened to boil over before referee Steven McLean ordered them both to the stands.
While Caixinha will serve his ban immediately, Robinson has until next Tuesday to decide whether to appeal his charge.
If he contests the case, a hearing on November 9 will determine if he will be barred from watching his side’s showpiece date with the Hoops on November 26 from the dug-out.
The Northern Irishman faces having his punishment increased after he received a three-game touchline from the SFA back in May 2016 while working as Well’s assistant boss. He was sent to the stand during a clash with Aberdeen at Pittodrie after “repeatedly adopting aggressive behaviour towards the fourth official, and repeatedly using offensive, abusing and insulting language”.
Rangers have already expressed their anger after defender Bruno Alves was the only player singled out for punishment in the wake of the feisty clash.
The Light Blues have rejected the SFA’s offer of a two-match ban after the Portugal international was accused of lashing out with both feet at Well frontman Louis Moult.
The Euro 2016 winner will have his case heard at a fast-track appeal hearing on Thursday but the Ibrox club are unhappy with disciplinary system run by Hampden chiefs.
In a strongly worded statement released on Tuesday, they claimed the decision to only open proceedings against Alves was “inexplicable”.
Gers also said: “Are we being asked to believe just one player was guilty of violent conduct in Sunday’s game? If that is the case, then it is clear Rangers are being assessed to a different standard from others in the Scottish game.”