ADF: An unreported error occurred in Appc. No errors were reported, but the tool returned a failure result code: 1.

If error occured when deploy the ADF Application (11.1.2.4.0) put below tags in web.xml file.
 An unreported error occurred in Appc. No errors were reported, but the tool returned a failure result code: 1.


<jsp-config>
        <jsp-property-group>
            <url-pattern>*.jsff</url-pattern>
            <is-xml>true</is-xml>
        </jsp-property-group>
</jsp-config>



For mor inforemation:
http://fortunefusionminds.blogspot.com/2014/07/error-unreported-error-occurred-in-appc.html