If you’re using a Domain User account (which is best practice by the way) for your Data Access Service account you may receive the following error when opening up the console.[error]”Data Access Service SPN Not Registered” “Alert Description: The System Center Operations Manager SDK service failed to register an SPN.”[/error]

This is because by default Domain User accounts don’t have the ability to update their own SPNs. To set your SPN correctly use the following commands with a user who has Domain Admin privileges:-
setspn –A MSOMSdkSvc/SERVERNAME DOMAIN\USERNAME
setspn –A MSOMSdkSvc/SERVERNAME.fqdn.name DOMAIN\USERNAME
If you wish to check that SPN registration has been set up correctly use:-
setspn -L DOMAIN\USERNAME

Remember! – You still need to make sure that the account has been granted ‘logon as a service’ rights, and is a local administrator on the root management server computer as per
http://technet.microsoft.com/en-gb/library/hh212808.aspx