This message appears if the show in Equipe is hosting more than 1 discipline. E.g. Para-Dressage and Dressage or Dressage and Jumping.
In this case you need to select only the competitions from1 discipline. After a (succesfull) export you can export another discipline.
In this case you need to select only the competitions from1 discipline. After a (succesfull) export you can export another discipline.