HTTP Error Handling Configuration Dialog
Error Code / Sub Error Code
Displays the error code to be configured with a custom message.
Handler Type
You can configure Internet Information Services (IIS) to send custom error messages instead of the default HTTP 1.1 error messages. These custom error messages can be mapped to a FILE or to a URL.
File / URL
Specify a file or URL that will handle and display the custom error message.
This field is of Formatted Type and can be edited using Smart Edit Control.
You can read more about Custom HTTP error messages in this article.