In MDM device management, I called the device synchronization interface (Sync the List of Devices: https://mdmenrollment.apple.com/devices/sync), and the returned data device_assigned_by did not return an email address as described in the documentation, but returned a string of numbers. What's the situation? This situation only occurs on some devices, and other devices return email addresses normally. Is there any solution for this?
Device Management Question
There was an issue with the sync service which was resolved Monday morning. Full syncs were not affected, only the notification of changes. If your server still has the incorrect data you can resolve this by triggering a full sync which will contain the correct information for all devices. If that's not an option, you can try making a change to affected devices which has no effect, such as assigning the same profile to the device. That will send a sync for that device with the correct information.