In the case where an inventory item is an assembly of other components, the item assembly structure (IAS) is used to list the parts and subassemblies that make up the item. For example, a laptop consists of many components such as a hard drive, keyboard, etc built into an assembly that defines the item like a laptop.
In addition, the IAS is used to define the components that make up a kit item. In this case, the items listed are not assembled into an item, but rather are 'kitted' together and can be issued, transferred, etc as one unit.
Currently, the item assembly structure information is available in Item application but not in the Inventory application. This information can be added by using the following steps.

Here are the steps to add in the Inventory application:
- Go to Application Designer.
- Export the inventor.xml
- Save a backup copy of it.
- Update inventor.xml. Add the following tab after the Where Used tab.
- Save it and import it.
<tab id="inv_ias_tab" label="Item Assembly Structure" inputmode="readonly" >
<datasrc id = "inv_item" parentdatasrc="MAINRECORD" relationship="ITEM" />
<datasrc id="inv_ias" parentdatasrc="inv_item" relationship="TOPITEMSTRUCT_1" beanclass="psdi.webclient.beans.item.TopItemStructBean" />
<datasrc id="inv_parentitem" parentdatasrc="inv_ias" relationship="PARENT" beanclass="psdi.webclient.beans.item.MoveToItemStructBean"/>
<section id="ias_tab_grid2_inv" border="true" >
<multiparttextbox id="inv_ias_tab_grid2_1" label="Top Level Item" datasrc="inv_item" dataattribute="itemnum" menutype="item" descdataattribute="item.description" />
<multiparttextbox id="inv_ias_tab_grid2_3" label="Current Level" datasrc="inv_ias" dataattribute="itemnum" menutype="item" descdataattribute="item.description" descdatasrc="inv_ias" longdescreadonly="true" descinputmode="readonly" />
<multiparttextbox id="inv_ias_tab_grid2_5" label="Belongs To" datasrc="inv_parentitem" dataattribute="itemnum" lookup="itemwithitemset" menutype="itemhier" applink="item" movetodatasrc="ias" movetoqbe="false" descdatasrc="ias" descdataattribute="item.description" longdescreadonly="true" descinputmode="readonly" />
<textbox id="inv_ias_tab_grid2_7" datasrc="inv_ias" dataattribute="remark" lookup="longdesc" />
</section>
<table id="inv_ias_tab_children_table" label="Children" parentdatasrc="inv_ias" relationship="CHILDREN" beanclass="psdi.webclient.beans.item.MoveToItemStructBean" inputmode="readonly">
<tablebody id="inv_ias_tab_children_table_tablebody" filterable="true" displayrowsperpage="10" >
<tablecol id="inv_ias_tab_children_table_tablebody_1" type="event" mxevent="toggledetailstate" mxevent_desc="Show Detail" sortable="false" filterable="false" hidden="false" />
<tablecol id="inv_ias_tab_children_table_tablebody_2" dataattribute="itemnum" lookup="itemwithitemset" menutype="itemhier" movetodatasrc="ias" defaultfocus="true" movetoqbe="false" applink="item,inventor" />
<tablecol id="inv_ias_tab_children_table_tablebody_3" dataattribute="item.description" sortable="false" >
<textbox id="inv_ias_item_desc" dataattribute="item.description" inputmode="readonly" lookup="longdesc" longdescreadonly="true" />
</tablecol>
<tablecol id="inv_ias_tab_children_table_tablebody_4" dataattribute="quantity" />
<tablecol id="inv_ias_tab_children_table_tablebody_5" dataattribute="remark" linkedcontrolid="ias_tab_children_table_1_grid3_4"/>
<tablecol id="inv_ias_tab_children_table_tablebody_6" type="event" mxevent="toggledeleterow" mxevent_icon="btn_garbage.gif" mxevent_desc="Mark Row for Delete" sortable="false" filterable="false" hidden="false" />
</tablebody>
<tabledetails id="inv_ias_tab_children_table_1" >
<section id="inv_ias_tab_children_table_1_grid3" label="Details" >
<sectionrow id="inv_ias_tab_children_table_1_grid3_row" >
<sectioncol id="inv_ias_tab_children_table_1_grid3_row_col1" >
<section id="inv_ias_tab_children_table_1_grid3_row_col1_sec" >
<multiparttextbox id="inv_ias_tab_children_table_1_grid3_1" dataattribute="itemnum" lookup="itemwithitemset" menutype="itemhier" movetodatasrc="ias" defaultfocus="true" movetoqbe="false" applink="item,inventor"
descdataattribute="item.description" longdescreadonly="true" longdescription="true" descinputmode="readonly" />
<textbox id="inv_ias_tab_children_table_1_grid3_3" dataattribute="quantity" />
</section>
</sectioncol>
<sectioncol id="inv_ias_tab_children_table_1_grid3_row_col2" >
<section id="inv_ias_tab_children_table_1_grid3_row_col2_sec" >
<textbox id="inv_ias_tab_children_table_1_grid3_4" dataattribute="remark" lookup="longdesc" />
</section>
</sectioncol>
</sectionrow>
</section>
</tabledetails>
</table>
</tab>
6. Go to inventory application. You will see a new tab “item Assembly Structure”.