È possibile utilizzare diversi ID Apple per iCloud e iTunes. Anche il documento di supporto Apple, Accedi con il tuo ID Apple - Utilizza diversi ID Apple per iCloud e iTunes esso.
Use different Apple IDs for iCloud and iTunes
We recommend that you use the same Apple ID for all Apple services on your device—including the iTunes & App Stores and iCloud. Using multiple Apple IDs might be confusing and cause issues with accessing purchased content or using some services.
But if you already have different Apple IDs that you want to use with iCloud and the iTunes & App Stores, follow these steps.
On your iPhone, iPad, or iPod touch:
If you're using iOS 10.3 or later, go to Settings and tap Sign in to your [device]. Enter the Apple ID that you want to use with iCloud. Go back to Settings, scroll down, and tap iTunes & App Stores. Tap Apple ID: [your name] > Sign Out. Then sign in with the Apple ID that you want to use with iTunes.
If you're using iOS 10.2 or earlier, go to Settings > iCloud and sign in with the Apple ID that you want to use with iCloud. Go back to Settings > iTunes & App Stores and sign in with the Apple ID that you want to use with iTunes.
On your Mac, go to System Preferences > iCloud and sign in with the Apple ID that you want to use with iCloud. Go to iTunes > Account > Sign In. Enter the Apple ID that you want to use with iTunes.
If you use multiple Apple IDs and want to restore your device from a backup, you can learn more about iCloud or iTunes backups.
If you have multiple Apple IDs, you can’t merge them.
Quindi, è possibile utilizzare separatamente per utilizzare ID Apple separati per iTunes e iCloud. Per utilizzare l'ID Apple desiderato per Apple Music, è sufficiente avviare iTunes e nella barra dei menu andare su Account → Esci. Ora accedi con l'ID Apple desiderato.