Note the following points when customizing the error pages with the Web server functionality, in the case of using the Web server integration functionality:

• You can use the error page customization functionality only in Cosminexus HTTP Server. For this reason, when integrating with the Microsoft IIS, even if error page customization is set in workers.properties, it becomes invalid.
• When the Web application supports the Servlet 2.3 specifications and you use the error page customization functionality with the <error-page> tag of web.xml specified in the Servlet specifications, the Web container returns the result of access to the pages described in the <error-page> tag, as the status code. Therefore, if an error does not occur in access to the pages described in the <error-page> tag , this functionality does not work.
• If the settings for error page customization are specified only in either the worker definition (the workers.properties or Easy Setup definition file) or httpsd.conf, then even if the specified error occurs in the Web container, the file set by the user is not displayed.
  If the error status code entrusted with the generation of the error page is only specified in the worker definition (the ErrorDocument directive of httpsd.conf is not defined), the error page returned when the error with that error status code occurs is the page that is automatically generated by Cosminexus HTTP Server.