Hi subhrajyoti,
I have to say that so far it is still not possible, since the error handling is coupled with Web Dynpro container, rather than a pure Servlet container. Probably in the next major release, this situation will be enhanced, after which the application will enjoy the same error page customization as JEE ones.
At the moment, our practices, as workarounds to some extent, are driven by the development guideline which requires developer to put big outer try-catch block in each action handler to catch all the system runtime exceptions, and let a common error handling component to report errors in a modal window just as what Windows application normally do when error happens, i.e. see detail error context, send report, close window&cleanup resources, etc.
I wonder whether these practices will be helpful to you. Just share my ideas.
Regards,
William Cui
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