We currently federate our Azure AD through Okta. We do not have on-prem AD. Due to to the fact that the manager field in M365 or AzureAD can only be update through on-prem AD when synced, and...
I tried Graph, same result - not sure how to do it in Power automate?
Set-MgUserManagerByRef : Unable to update the specified properties for on-premises mastered Directory Sync objects or objects currently undergoing migration.