There are no app names to select. You can only select app names that you've reserved from {0}. If you haven't reserved a ...

There are no app names to select. You can only select app names that you've reserved from {0}. If you haven't reserved a name yet, enter a name in the Reserve a new app name text box, and then choose the Reserve button. If you want to use the name of an app that you've previously published, clear the Include app names that already have packages checkbox, and then select the app name.