hello,

just add the @@SERVERNAME

SELECT

s.server_name as ServerName,

ssg.name as GroupName

FROM [msdb].[dbo].[sysmanagement_shared_registered_servers_internal] s

INNER JOIN [msdb].[dbo].[sysmanagement_shared_server_groups] ssg

ON s.server_group_id = ssg.server_group_id

UNION

SELECT @@SERVERNAME, 'Sql Server'