• ForEachPartGroup, which is used to iterate over all part groups.
• Template with Parameters, which always to pass parameter value to a next iteration.

<Grid>
<Options>
<CellAutoHeight/>
</Options>
<Columns>
<ItemNameColumn width="200" objectName="CircularReferences"/>  
<ItemTypeColumn width="100" objectName="CircularReferences"/>  
<TextColumn caption="Path to Circular References" objectName="Depth" width="350" multiValueStyle="Bullets">
<Value>#{Name} (#{Type.Name})</Value>
</TextColumn>
</Columns>

    <!-- To control the number of recursion calls-->
<Variable name="PartGroupDepth" as="Integer" select="10"/>
<ApplyTemplate name="PartGroup">
<WithParam name="p1" select="$PartGroupDepth"/>
<WithParam name="p2" select="[]"/> 
</ApplyTemplate>  


<Template name="PartGroup">
<Parameter name="p1" as="Integer"/> 
<Parameter name="p2" as="[Item]"/>  
        
<Variable name="PreviousItems" as="Items" select="$p2"/>
        
<If test="$p1 != 0">  
<ForEachPartGroup>
<ForEachPart>   
<DefObj>    
<Variable name="CurrentItem" as="Items" select="."/>
<Variable name="Accumulated" as="Items" select="$CurrentItem union $PreviousItems"/>

<Choose>  
<When test="not $CurrentItem in $PreviousItems">       
<ApplyTemplate name="PartGroup">  
<WithParam name="p1" select="$p1 - 1"/>
<WithParam name="p2" select="$Accumulated"/>  
</ApplyTemplate> 
</When>
<Otherwise>
<Row> 
<RowObject name="CircularReferences"> 
<ForEach select="$PreviousItems">
<RowObject name="Depth"/> 
</ForEach>
</RowObject> 
</Row>
</Otherwise>
</Choose>
</DefObj>
</ForEachPart>
</ForEachPartGroup> 
</If>
</Template>
</Grid>