diff --git a/view/book_list.xml b/view/book_list.xml
index 9d04bfd..2189834 100644
--- a/view/book_list.xml
+++ b/view/book_list.xml
@@ -5,10 +5,10 @@ full copyright notices and license terms. -->
 <data>
 
     <xpath expr="/tree/field[@name='balance']" position="after">
-        <field name="current_value" symbol="currency"/>
-        <field name="diff_amount" symbol="currency"/>
-        <field name="diff_percent"/>
-        <field name="quantity" symbol="quantity_uom"/>
+        <field name="current_value" symbol="currency" optional="0"/>
+        <field name="diff_amount" symbol="currency" optional="0"/>
+        <field name="diff_percent" optional="0"/>
+        <field name="quantity" symbol="quantity_uom" optional="0"/>
     </xpath>
 
 </data>
diff --git a/view/book_tree.xml b/view/book_tree.xml
index c375777..2bb9983 100644
--- a/view/book_tree.xml
+++ b/view/book_tree.xml
@@ -5,8 +5,8 @@ full copyright notices and license terms. -->
 <data>
 
     <xpath expr="/tree/field[@name='balance']" position="after">
-        <field name="diff_amount" symbol="currency"/>
-        <field name="diff_percent"/>
+        <field name="diff_amount" symbol="currency" optional="0"/>
+        <field name="diff_percent" optional="0"/>
     </xpath>
 
 </data>
diff --git a/view/line_list.xml b/view/line_list.xml
index e292813..4c47438 100644
--- a/view/line_list.xml
+++ b/view/line_list.xml
@@ -5,9 +5,9 @@ full copyright notices and license terms. -->
 <data>
 
     <xpath expr="/tree/field[@name='balance']" position="after">
-        <field name="quantity_credit"/>
-        <field name="quantity_debit"/>
-        <field name="quantity_balance"/>
+        <field name="quantity_credit" optional="0"/>
+        <field name="quantity_debit" optional="0"/>
+        <field name="quantity_balance" optional="0"/>
     </xpath>
 
 </data>
diff --git a/view/recon_list.xml b/view/recon_list.xml
index 6fa1694..a80a5fa 100644
--- a/view/recon_list.xml
+++ b/view/recon_list.xml
@@ -5,7 +5,7 @@ full copyright notices and license terms. -->
 <data>
 
     <xpath expr="/tree/field[@name='end_amount']" position="after">
-        <field name="start_quantity"/>
-        <field name="end_quantity"/>
+        <field name="start_quantity" optional="0"/>
+        <field name="end_quantity" optional="0"/>
     </xpath>
 </data>
diff --git a/view/split_list.xml b/view/split_list.xml
index 876e52d..601b4ec 100644
--- a/view/split_list.xml
+++ b/view/split_list.xml
@@ -5,8 +5,8 @@ full copyright notices and license terms. -->
 <data>
 
     <xpath expr="/tree/field[@name='amount_2nd_currency']" position="after">
-        <field name="quantity" symbol="quantity_uom"/>
-        <field name="quantity_2nd_uom" symbol="quantity2nd"/>
+        <field name="quantity" symbol="quantity_uom" optional="0"/>
+        <field name="quantity_2nd_uom" symbol="quantity2nd" optional="0"/>
     </xpath>
 
 </data>