Exporting Management Groups with Role Assignment(IAM)

@H Raja
Thank you for your post and I apologize for such a delayed response!

When it comes to generating/ getting a report via PowerShell on all your Management Groups, and Subscriptions, with all Role Assignment details, you should be able to do this via the Get-AzRoleAssignment command. The Az PowerShell command lists Azure RBAC role assignments at the specified scope, and by default it lists all role assignments in the selected Azure subscription.

When I tested Get-AzRoleAssignment within my Azure AD Tenant, I received the RBAC roles from my Management Group all the way to Resources.

#Connect to Azure via PowerShell  
Connect-AzAccount  
  
#Execute the Get-AzRoleAssignment Command  
$getrRoleAssignments =  Get-AzRoleAssignment  
  
#Export Output into an Excel doc   
$getrRoleAssignment | export-csv -Path .\rbacROles.csv  
  
#Management Group and Subscription AZ commands  
Get-AzManagementGroup  
Get-AzSubscription  

Additional Links:
Get-AzManagementGroup
Get-AzSubscription

If you have any other questions, please let me know.
Thank you for your time and patience throughout this issue.

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