"Error Code: 21024
There appears to be a temporary issue with the Nintendo Wi-Fi Connection. Our technicians are currently working to resolve this problem. Please try your connection again later.
If you have waited several hours and are still seeing this error code, please call 1-800-255-3700. Our representatives are available between 6:00 a.m. and 7:00 p.m. Pacific Time, seven days a week."
For future issues use this site http://www.nintendo.com/consumer/sys...error_code.jsp