I want to save a file outside of the Apps folder

Hi ms97,

No, your application doesn't have such permission. You have limited your application permission to access (not only save) files and/or folders within app specific folder only and nothing outside. That's your choice! As seems, this choice is unintentional. You need full access application, not app' folder type! Unfortunately, such permission cannot get changed (unlike other permissions, like scopes, for instance). You need to recreate your application and select correct application type at creation moment (as noted, later cannot change).

Hope this helps.