Hi Ramesh,
I have shown the code that i have created my tree table,
<?xml version="1.0" encoding="UTF-8"?>
<core:View xmlns:core="sap.ui.core" xmlns="sap.m"
controllerName="sap.ui.demo.myFiori.view.Master">
<Page title="{i18n>MasterTitle}">
<subHeader>
<Bar>
<contentLeft>
<SearchField id="searchField" liveChange="onSearch"
width="100%" />
</contentLeft>
</Bar>
</subHeader>
<List id="homelistID" items="{/Business_Process_Hierarchy}">
<items>
<CustomListItem>
<Panel id="homePanelID" expandable="true" expanded="false"
headerText="{ProcessName}">
<headerToolbar>
<Toolbar height="3rem">
<Title text="{ProcessName}" tooltip="{ProcessName}" />
<ToolbarSpacer />
<Button text="{SubProcessText}" icon="sap-icon://open-command-field"
press="handleClick" />
</Toolbar>
</headerToolbar>
<List id="systemsListID" items="{Child_Process01}">
<items>
<CustomListItem>
<Panel id="homePanelID_01" expandable="true" expanded="false"
headerText="{ProcessName}" select="handleFirst">
<headerToolbar>
<Toolbar height="3rem">
<Title text="{ProcessName}" tooltip="{ProcessName}" />
<ToolbarSpacer />
<Button text="{SubProcessText}" icon="sap-icon://open-command-field"
press="handleClick" />
</Toolbar>
</headerToolbar>
<List id="systemsListID1" items="{Child_Process02}">
<items>
<CustomListItem>
<Panel id="homePanelID_02" expandable="true"
expanded="false" headerText="{ProcessName}" select="handleFirst">
<headerToolbar>
<Toolbar height="3rem">
<Title text="{ProcessName}" tooltip="{ProcessName}" />
<ToolbarSpacer />
<Button text="{SubProcessText}" icon="sap-icon://open-command-field"
press="handleClick" />
</Toolbar>
</headerToolbar>
<List id="systemsListID2" items="{Child_Process03}">
<items>
<!-- <ObjectListItem title="{ProcessName}" type="Active"
press="onListItemPress"> <attributes> <ObjectAttribute text="{SubProcessText}"
/> </attributes> </ObjectListItem> -->
<!-- starts -->
<CustomListItem>
<Panel id="homePanelID_03" expandable="false"
expanded="false" headerText="{ProcessName}" select="handleFirst">
<headerToolbar>
<Toolbar height="3rem">
<Title text="{ProcessName}" tooltip="{ProcessName}" />
<ToolbarSpacer />
<Button text="{SubProcessText}" icon="sap-icon://open-command-field"
press="handleClick" />
</Toolbar>
</headerToolbar>
</Panel>
</CustomListItem>
<!-- ends -->
</items>
</List>
</Panel>
</CustomListItem>
</items>
</List>
</Panel>
</CustomListItem>
</items>
</List>
</Panel>
</CustomListItem>
</items>
</List>
<footer>
<Bar>
<contentRight>
<Button icon="sap-icon://add" press="Pressadd" type="Accept" />
</contentRight>
<contentLeft>
<Button icon="sap-icon://drop-down-list" press="Pressdropdown" />
</contentLeft>
</Bar>
</footer>
</Page>
</core:View>