If an exception occurs during a web application request, which is not caught and handled by the web application, the exception is passed to a JSP error page.
The error page is determined by the following configuration property in WEB-INF/config/bowstreet.properties
# Default error page (JSP) for unhandled exceptions.
If it is required for your particular project, you can change the look and feel of this provided error page, or change this property to point to your own custom error reporting JSP page. The value of this property is a URL relative to the application context where IBM® WebSphere® Portlet Factory is installed.
Parent topic: Handling errors in web applications