The project contains non-enterprise calendars.}Your Project Server does not allow non-enterprise base calendars, but this ...

{The project contains non-enterprise calendars.}Your Project Server does not allow non-enterprise base calendars, but this project contains non-enterprise base calendars including: 
^1

First remove all dependencies that the project, tasks, and local resources have on non-enterprise calendars. Then delete them from the Calendar tab of the Organizer in the Tools menu.