Sent off in the Copa America final, the Brazil international has been banned for two months and fined by the continent's governing body.
The Conmebol statement on its website didn't specify why Messi was being punished.
The ban is expected to be served in Argentina’s first qualifier for the 2022 World Cup.
South American football's ruling body CONMEBOL penalised Argentine federation president Claudio Tapia over an attack on a referee during Copa America.
Conmebol says the accusations levelled by Lionel Messi to them is unacceptable.
South America faces stiff competition from Morocco, Spain, Portugal and England who have expressed interest in hosting the 2030 tournament.
The Copa América final in Brazil next year will be held at the Maracanã stadium in Rio de Janeiro while the opening match will take place at the Morumbi in São Paulo.