@Masato Thanks for posting in our Q&A.
To clarify this issue, we appreciate your help to collect some information:
1.Please show the screen shot of the target device's MDM in Azure AD portal. For example:
2.How did you enroll this device? Please clarify the steps.
3.Did you set up automatic enrollment? Please configure "MDM user scope" to "All" and "MAM User scope" to "None".
If there is anything update, feel free to let us know.
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