My file was failed because for having too many icons in a set, why is this?
Sets are useful and are often a bargain for buyers. While we
will take larger sets of icons that are well-designed and clean, we
prefer smaller sets of 2-6 icons in one file. Smaller sets help the
buyer see your icons more clearly in the search grid. We may also
ask you to group individual icons together in larger sets if we
feel it would be more beneficial or appealing to the buyer.