Hi Mhantesh,
The crossdomain.xml file is required only if the data source xml file is present on a different domain.
You need to place the file under the root directory of Tomcat.
Also make sure that your xml file is in the below format :
<data>
<variable>
<row>
<column> </column>
<column> </column>
</row>
<row>
<column> </column>
<column> </column>
</row>
</variable>
</data>
Hope this helps.