I got some fixes for the Apple ID auth error 5103. (There is no KBase!)
If you have logged into the same Apple ID used for Configurator in both iTunes & App Store, but you still cannot get the codes to authenticate (install), try this:
Fix Error 5103
Log out of iTunes Store and App Store
Restart the computer
log back in
Make sure ALL apps are QUIT!
Trash (~/library/preferences)
com.apple.storeagent.plist
com.apple.appstore.plist
Open iTunes - login
Make sure iTunes is authorized
Open App Store - login
Quit both apps
Open Apple Config
Now try to install the apps (supervised section) in question that have the errors.
The apps should start to install on your supervised iPads and error for App Store login should go away when you look at the codes in Apple Config. (You will have to make sure you have enough iPads avilable to install all of the errored codes.)
I hope this helps.
I deal with 5,000 iPads and 40 Apple Config computers. If you have error I can probably help get you a fix.
Also, Apple Config support line is free for EDU. (866) 752-7753