Rangers have been ordered to close part of Ibrox for Thursday’s meeting with Legia Warsaw following “racist behaviour – which includes sectarian singing”.
The punishment from Uefa relates to the Europa League first round, second leg against St Joseph’s on 18 July.
A statement from Rangers reveals they must shut off “a section, or sections containing no fewer than 3000 seats”.
The club has yet to announce which area will be closed for the sold-out game.
“Our supporters have been asked repeatedly by the club to refrain from indulging in this, and other forms of unacceptable behaviour,” added the statement. “Sadly, the warnings have fallen on deaf ears and the actions of this minority will cause the club and the majority of good and decent Rangers supporters to pay a heavy penalty.
“Unfortunately a significant number of supporters, innocent of any wrong doing, will be unable to attend next week’s match. This is deeply regrettable to all at the club and we hope that the guilty parties, who attracted the attention of Uefa might reflect on the damage their unacceptable behaviour is causing Rangers and their fellow supporters.
“If any individual supporter is unable to behave in a civilised manner then please stay away from Ibrox and our club. You are harming Rangers and that is something a genuine supporter would never wish to do.”
Uefa have confirmed the sanction for Thursday’s tie, which sits 0-0 after this week’s play-off round first leg, stating a banner with “#EqualGame” will be placed across the empty section of seats.
“The Control, Ethics and Disciplinary Body has decided to order a partial closure of the stadium during the next one (1) UEFA competition match in which Rangers FC play as the host club, for the racist behaviour of its supporters,” said the governing body. “Rangers FC shall, as a matter of urgency, inform UEFA of the sector(s) to be closed, which shall at least comprehend 3,000 seats.”
Rangers chairman Dave King added: “Rangers is a club open to all and we will continue to convey this message at every opportunity through our Everyone Anyone initiative.
“Rangers has players and supporters from many religions, cultures and backgrounds but we are one and the same when we gather to support our club. If any supporter cannot accept that then Rangers is not the club for them.”
The Scottish FA and Scottish Professional Football League have declined to comment.