The GAA has warned supporters to only purchase tickets for the All-Ireland final replay from official channels rathe than from unofficial sources.
The Association says that anyone who attempts to buy and sell tickets outside of their official network are at risk of having their tickets cancelled.
No tickets are on general sale for the October 1st showdown between Mayo and Dublin.
They are only available through GAA Clubs and County Boards as well as to season ticket holders.
In a statement, the GAA said: "The GAA would like to remind patrons that tickets for the GAA Football All Ireland Final Replay between Dublin and Mayo on Saturday, October 1st should be sourced through official GAA channels only.
"There are no tickets on general sale. Tickets will be distributed via our GAA Clubs, County Boards, as well as season ticket holders.
"People who attempt to buy and sell tickets outside of this network are at risk of having their tickets cancelled and they will be denied entry to the stadium on match day.
"The GAA does not condone the touting of match tickets at above face value and our Ticket Office was active up until throw-in last weekend identifying and cancelling such tickets that were being sold privately and online for above face value.
"Yet again, such is the demand for tickets that it is expected that Croke Park will be at full capacity on Saturday, October 1st."
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