diff --git a/modules/purchase_trade/view/purchase_form.xml b/modules/purchase_trade/view/purchase_form.xml
index 9d882d3..802c0cf 100755
--- a/modules/purchase_trade/view/purchase_form.xml
+++ b/modules/purchase_trade/view/purchase_form.xml
@@ -100,7 +100,7 @@ this repository contains the full copyright notices and license terms. -->
                 </group>
             </group>
 
-            <field name="lines" colspan="4"
+            <field name="lines" colspan="4" mode="form,tree"
                 line_chips="quantity,del_period,product"
                 line_chips_label="{quantity}mt {del_period}&#10;{product}"/>
             <notebook colspan="6">