Hi @y.sato
I don't believe there is a domain level requirements, as SSPR is a client side component rather than a domain based functionality.
Here is the the page with the Microsoft requirements page
Gary.
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I'm trying to use Self password reset for Azure AD.
Azure AD and ADDS are synced by ADDC.
When enabling SSPR, are there any restrictions on the forest-level and domain-level versions of ADDS?