You are unable to connect to an online feature and you receive and error code between 60000 and 99999.
As of May 20, 2014, certain online functionality offered through Nintendo Wi-Fi Connection is no longer accessible. The discontinued services include online play, matchmaking, and leaderboards for many Wii, Nintendo DS and Nintendo DSi games. You will receive this error code when attempting to use an online feature affected by the end of these services.
For more information regarding the end of these services, click here.