Duplicate User Name Causes Unclear Error Message (6303812)

Problem Summary: In the Web Console, when a user attempts to create a user account with a generated certificate and specifies an alias that is already known to the server, the following error appears in the Web Console on the Step 3 page:

An error has occured. See server logs or contact Registry support.

Workaround: Examine the server log. The root cause is there, buried in the stack trace:

Caused by: java.lang.Exception: Key pair not generated, alias name already 
exists