Index: dam engine/trunk/Xsds Liquid/DamDesignResult.xsd
===================================================================
diff -u -r444 -r450
--- dam engine/trunk/Xsds Liquid/DamDesignResult.xsd	(.../DamDesignResult.xsd)	(revision 444)
+++ dam engine/trunk/Xsds Liquid/DamDesignResult.xsd	(.../DamDesignResult.xsd)	(revision 450)
@@ -6,16 +6,16 @@
     <xs:sequence>
       <xs:element minOccurs="0" maxOccurs="1" name="NwoDesignResults">
         <xs:complexType>
-          <xs:attribute name="NumberOfIterations" type="xs:int" />
+          <xs:attribute name="NumberOfIterations" type="xs:int" use="optional" />
           <xs:attribute name="SafetyFactor" type="xs:double" use="optional" />
           <xs:attribute name="Zone1SafetyFactor" type="xs:double" use="optional" />
           <xs:attribute name="LocalZone1EntryPointX" type="xs:double" use="optional" />
           <xs:attribute name="LocalZone1ExitPointX" type="xs:double" use="optional" />
           <xs:attribute name="Zone2SafetyFactor" type="xs:double" use="optional" />
           <xs:attribute name="LocalZone2EntryPointX" type="xs:double" use="optional" />
           <xs:attribute name="LocalZone2ExitPointX" type="xs:double" use="optional" />
-          <xs:attribute name="NwoId" type="xs:string" />
-          <xs:attribute name="ResultIndex" type="xs:int" />
+          <xs:attribute name="NwoId" type="xs:string" use="required" />
+          <xs:attribute name="ResultIndex" type="xs:int" use="optional" />
           <xs:attribute name="LocationXrdStart" type="xs:double" use="optional" />
           <xs:attribute name="LocationYrdStart" type="xs:double" use="optional" />
           <xs:attribute name="LocationZrdStart" type="xs:double" use="optional" />
@@ -29,8 +29,8 @@
           <xs:sequence minOccurs="0" maxOccurs="1">
             <xs:element name="UpliftSituation" type="UpliftSituation" />
           </xs:sequence>
-          <xs:attribute name="ResultMessage" type="xs:string" />
-          <xs:attribute name="RedesignedSurfaceLine2Stability" />
+          <xs:attribute name="ResultMessage" type="xs:string" use="required" />
+          <xs:attribute name="RedesignedSurfaceLine2Stability" use="optional" />
           <xs:attribute name="SafetyFactor" type="xs:double" use="optional" />
           <xs:attribute name="FailureProbability" type="xs:double" use="optional" />
           <xs:attribute name="Zone1SafetyFactor" type="xs:double" use="optional" />
@@ -39,16 +39,16 @@
           <xs:attribute name="Zone2SafetyFactor" type="xs:double" use="optional" />
           <xs:attribute name="LocalZone2EntryPointX" type="xs:double" use="optional" />
           <xs:attribute name="LocalZone2ExitPointX" type="xs:double" use="optional" />
-          <xs:attribute name="NumberOfIterations" type="xs:int" />
+          <xs:attribute name="NumberOfIterations" type="xs:int" use="optional" />
         </xs:complexType>
       </xs:element>
       <xs:element minOccurs="0" maxOccurs="1" name="PipingDesignResults">
         <xs:complexType>
           <xs:sequence minOccurs="0" maxOccurs="1">
             <xs:element name="UpliftSituation" type="UpliftSituation" />
           </xs:sequence>
-          <xs:attribute name="ResultMessage" type="xs:string" />
-          <xs:attribute name="RedesignedSurfaceLine2" />
+          <xs:attribute name="ResultMessage" type="xs:string" use="required" />
+          <xs:attribute name="RedesignedSurfaceLine2" use="optional" />
           <xs:attribute name="FailureProbability" type="xs:double" use="optional" />
           <xs:attribute name="UpliftFactor" type="xs:double" use="optional" />
           <xs:attribute name="HeaveFactor" type="xs:double" use="optional" />
@@ -64,16 +64,16 @@
         </xs:complexType>
       </xs:element>
     </xs:sequence>
-    <xs:attribute name="Id" type="xs:string" />
-    <xs:attribute name="Xrd" type="xs:double" />
-    <xs:attribute name="Yrd" type="xs:double" />
-    <xs:attribute name="BaseFileName" type="xs:string" />
-    <xs:attribute name="LocationName" type="xs:string" />
-    <xs:attribute name="ScenarioName" type="xs:string" />
-    <xs:attribute name="ProfileName" type="xs:string" />
-    <xs:attribute name="SafetyFactor" type="xs:double" />
-    <xs:attribute name="FailureProbability" type="xs:double" />
-    <xs:attribute name="CalculationResult">
+    <xs:attribute name="Id" type="xs:string" use="required" />
+    <xs:attribute name="Xrd" type="xs:double" use="required" />
+    <xs:attribute name="Yrd" type="xs:double" use="required" />
+    <xs:attribute name="BaseFileName" type="xs:string" use="required" />
+    <xs:attribute name="LocationName" type="xs:string" use="required" />
+    <xs:attribute name="ScenarioName" type="xs:string" use="required" />
+    <xs:attribute name="ProfileName" type="xs:string" use="required" />
+    <xs:attribute name="SafetyFactor" type="xs:double" use="optional" />
+    <xs:attribute name="FailureProbability" type="xs:double" use="optional" />
+    <xs:attribute name="CalculationResult" use="required">
       <xs:simpleType>
         <xs:restriction base="xs:string">
           <xs:enumeration value="NoRun" />