On Apple Website, there is a limit to 10 Associated ID with your account. But what does that really mean? Does it mean you can only have 10 iDevices? Does that mean you can only access your account 10 account at a time? I have about 19 Devices that uses the same account that is associated by iTunes for Automatic Downloads.
I have 3 iPod Touch, from old to new, 3 iPhone 4 including the 4S. 5 iPad 2, 2 iPad 1, 3 Apple TV and 3 Mac OS-X. But how they are associated to 10 ID is unique in some ways and here’s how to avoid the warning pop up box “You Cannot Associate More Devices With This Apple ID”. It then gave me instruction on how to remove an associated device with this statement: “To use Automatic Downloads with this device, remove an associated device from your iTunes Account Settings on your computer and try again.”
If you get this dialog as a warning, it means you have exceed the 10 limit associated to your iTunes ID Account. But this only applies if you use the Automatic Downloads on your iDevices or your Mac OS-X.
If you use iTunes 10.5.2 or above, on OS X or Windows, the Automatic Download is located under Preference and go to Store to open Store Preferences and deselect Music, Apps and Books.
On your iDevices, it doesn’t matter if you are on the iPad, iPod Touch or iPhone, Go to Settings then go down to Store and in there, you will see two options that are either ON or OFF. The Apps and Music, you may turn that OFF if you exceed the 10 limitations to have your new iDevices be associated with iTunes.
So basically, the 10 limitations is only for iTunes syncing Apps, Music and/or Books. It has nothing to do with how many iDevices you have tied to your Apple ID. As proof of myself having too many iDevices, I can download apps, music and books without syncing to iTunes. The convenience for iTunes to have this option is so that you don’t have to sync your iDevices with iTunes. Whenever you download an app, or apps, music and/or books, it will automatically download to your iTunes or your other iDevices.