Hi Marten,
Thanks for the reply. The 2 files were same as you told. Even I am not trying to add a new item in the browse-catalog file. These are the same files which came along with geoportal download.
content of browse.xml which has been used in my application is pasted below
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<?xml version="1.0" encoding="UTF-8"?>
<treeCollection>
<tree key="browseCatalog" fileName="gpt/search/browse/browse-catalog.xml"/>
<tree key="browseResource" fileName="gpt/search/browse/browse-resource.xml"/>
</treeCollection>
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content of browse-catalog.xml which has been used in my application is pasted below
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<?xml version="1.0" encoding="UTF-8"?>
<tree>
<label>name</label>
<identifier>id</identifier>
<!-- Catalog -->
<item>
<id>0</id>
<name resourceKey="catalog.browse.toc.browseCatalog"></name>
<query>searchText=*:*</query>
<!-- Content types -->
<item>
<id>1</id>
<name resourceKey="catalog.search.filterContentTypes.title"></name>
<query>contentType=application,clearinghouse,document,downloadableData,geographicActivities,geographicService,liveData,mapFiles,offlineData,staticMapImage</query>
<item>
<id>2</id>
<name resourceKey="catalog.search.filterContentTypes.application"></name>
<query>contentType=application</query>
</item>
<item>
<id>3</id>
<name resourceKey="catalog.search.filterContentTypes.clearinghouse"></name>
<query>contentType=clearinghouse</query>
</item>
<item>
<id>4</id>
<name resourceKey="catalog.search.filterContentTypes.document"></name>
<query>contentType=document</query>
</item>
<item>
<id>5</id>
<name resourceKey="catalog.search.filterContentTypes.downloadableData"></name>
<query>contentType=downloadableData</query>
</item>
<item>
<id>6</id>
<name resourceKey="catalog.search.filterContentTypes.geographicActivities"></name>
<query>contentType=geographicActivities</query>
</item>
<item>
<id>7</id>
<name resourceKey="catalog.search.filterContentTypes.geographicService"></name>
<query>contentType=geographicService</query>
</item>
<item>
<id>8</id>
<name resourceKey="catalog.search.filterContentTypes.liveData"></name>
<query>contentType=liveData</query>
</item>
<item>
<id>9</id>
<name resourceKey="catalog.search.filterContentTypes.mapFiles"></name>
<query>contentType=mapFiles</query>
</item>
<item>
<id>10</id>
<name resourceKey="catalog.search.filterContentTypes.offlineData"></name>
<query>contentType=offlineData</query>
</item>
<item>
<id>11</id>
<name resourceKey="catalog.search.filterContentTypes.staticMapImage"></name>
<query>contentType=staticMapImage</query>
</item>
</item>
<!-- ISO Topic Categories -->
<item>
<id>12</id>
<name resourceKey="catalog.harvest.iso.caption"></name>
<query>dataCategory=boundaries,farming,climatologyMeteorologyAtmosphere,biota,economy,planningCadastre,society,elevation,environment,structure,geoscientificInformation,health,imageryBaseMapsEarthCover,inlandWaters,location,intelligenceMilitary,oceans,transportation,utilitiesCommunication</query>
<item>
<id>13</id>
<name resourceKey="catalog.mdCode.topic.boundaries"></name>
<query>dataCategory=boundaries</query>
</item>
<item>
<id>14</id>
<name resourceKey="catalog.mdCode.topic.farming"></name>
<query>dataCategory=farming</query>
</item>
<item>
<id>15</id>
<name resourceKey="catalog.mdCode.topic.climatologyMeteorologyAtmosphere"></name>
<query>dataCategory=climatologyMeteorologyAtmosphere</query>
</item>
<item>
<id>16</id>
<name resourceKey="catalog.mdCode.topic.biota"></name>
<query>dataCategory=biota</query>
</item>
<item>
<id>17</id>
<name resourceKey="catalog.mdCode.topic.economy"></name>
<query>dataCategory=economy</query>
</item>
<item>
<id>18</id>
<name resourceKey="catalog.mdCode.topic.planningCadastre"></name>
<query>dataCategory=planningCadastre</query>
</item>
<item>
<id>19</id>
<name resourceKey="catalog.mdCode.topic.society"></name>
<query>dataCategory=society</query>
</item>
<item>
<id>20</id>
<name resourceKey="catalog.mdCode.topic.elevation"></name>
<query>dataCategory=elevation</query>
</item>
<item>
<id>21</id>
<name resourceKey="catalog.mdCode.topic.environment"></name>
<query>dataCategory=environment</query>
</item>
<item>
<id>22</id>
<name resourceKey="catalog.mdCode.topic.structure"></name>
<query>dataCategory=structure</query>
</item>
<item>
<id>23</id>
<name resourceKey="catalog.mdCode.topic.geoscientificInformation"></name>
<query>dataCategory=geoscientificInformation</query>
</item>
<item>
<id>24</id>
<name resourceKey="catalog.mdCode.topic.health"></name>
<query>dataCategory=health</query>
</item>
<item>
<id>25</id>
<name resourceKey="catalog.mdCode.topic.imageryBaseMapsEarthCover"></name>
<query>dataCategory=imageryBaseMapsEarthCover</query>
</item>
<item>
<id>26</id>
<name resourceKey="catalog.mdCode.topic.inlandWaters"></name>
<query>dataCategory=inlandWaters</query>
</item>
<item>
<id>27</id>
<name resourceKey="catalog.mdCode.topic.location"></name>
<query>dataCategory=location</query>
</item>
<item>
<id>28</id>
<name resourceKey="catalog.mdCode.topic.intelligenceMilitary"></name>
<query>dataCategory=intelligenceMilitary</query>
</item>
<item>
<id>29</id>
<name resourceKey="catalog.mdCode.topic.oceans"></name>
<query>dataCategory=oceans</query>
</item>
<item>
<id>30</id>
<name resourceKey="catalog.mdCode.topic.transportation"></name>
<query>dataCategory=transportation</query>
</item>
<item>
<id>31</id>
<name resourceKey="catalog.mdCode.topic.utilitiesCommunication"></name>
<query>dataCategory=utilitiesCommunication</query>
</item>
</item>
</item>
</tree>
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Thanks and Regards,
~Paul