Hi @Athulya Pillai ,
You need to be able to import the identity store into the UPA.
1.Configure synchronization settings in “Manage Profile Service: User Profile Service” page.
2.Modify user properties.
3.Verify that the profiles have been imported.
More details about how to configure user Profile Service For ADFS Provider for your reference: SharePoint 2013 Configure User Profile Service For ADFS Provider
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