SMA and CMS is enhanced to support SAML authentication for Administrators. Also, SMA is enhanced to support group membership details over SAML authentication and users without on-premise Active Directory can now have group level management.
Prior to SMA 12.4.1 version, group membership details of users are not available to SMA when using SAML IdP authentication.
For more information on how to configure user group support in SAML authentication, see Configuring a SAML 2.0 Identity Provider Authentication Server.