On every site is it possible that, due to some unexpected behaviour, pages may not render properly. Every professional website should anticipate on such an event and configure the site such that a friendly error is shown to the user.

It is important to understand that in Smartsite errors may occur at three different levels. Errors can occur in

• IIS
• ASP.Net
• Smartsite

Errors that occur in IIS can not be trapped in ASP.Net or Smartsite so it is important to specify friendly error pages at each level.