The Migration Manager on Configuration Manager site server "%1" was unable to connect to Configuration Manager 2007 site ...

%11The Migration Manager on Configuration Manager site server "%1" was unable to connect to Configuration Manager 2007 site server "%2" due to insufficient permissions. Ensure the account specified for the specified source Configuration Manager site is part of the local "SMS Admins" security group and has been granted full permissions to Configuration Manager 2007 site.%0