Ticketmaster has apologised for a "database error", after which numerous fans applying to a ballot for Robbie Williams tickets were mistakenly informed they had been successful in getting tickets.
Williams announced details last week of September charity concerts in Dublin and Glasgow and invited fans to apply online for tickets. However, some fans who applied for Dublin tickets were told that they were successful in being selected for Glasgow tickets - and vice versa.
Ticketmaster suspended the allocation process when they became aware of the problem.
"Customers who registered their interest in the Robbie Williams Dublin show and were successful in their application but received an email referring to the Glasgow date are entitled purchase tickets for the Dublin show", a spokesperson for Ticketmaster.
The Ticketing group went on to say that those affected will receive additional communication with regard to the error, but were unsure as to how many emails were sent out mistakenly.
Williams will play The O2 on September 14th. Tickets will cost between €39.05 and €44.05, with all proceeds going to UNICEF and Childline.
Scarlet for them, we've never had anything like that at entertainment.ie/tickets!