• Neither Apple Account can be a child account created through Family Sharing.
• Neither Apple Account can already be used for migrated purchases. Learn how to undo a migration of purchases. If you undo a migration of purchases from a secondary account, you won't be able to migrate purchases again for 1 year.
• You can't migrate purchases if both the primary Apple Account and the secondary Apple Account have music library data associated with each of them.
• You can't migrate purchases if you've set your Apple One subscription to provide iCloud storage to a third, different account. Learn about Apple One and iCloud storage.
• If your primary account has never been used for purchases or free downloads, you can't migrate purchases.
• You can't migrate purchases from an Apple Account that's been deleted or deactivated.
• You can't migrate purchases if your Apple Account is locked or disabled.
• Neither Apple Account can be receiving any special access to apps or content. For example, an Apple Account enrolled in the VPP program through an employer to receive special access to apps.