diff --git a/transforms/csdl/preprocess_csdl.xsl b/transforms/csdl/preprocess_csdl.xsl
index 2faf602f..cc0c5dbc 100644
--- a/transforms/csdl/preprocess_csdl.xsl
+++ b/transforms/csdl/preprocess_csdl.xsl
@@ -1871,7 +1871,17 @@
                     </xsl:element>
                 </xsl:when>
             </xsl:choose>
-        
+            <!-- Remove Deletability for entitlementManagement/accessPackageAssignments navigation property-->
+            <xsl:choose>
+                <xsl:when test="not(edm:Annotations[@Target='microsoft.graph.entitlementManagement/accessPackageAssignments'])">
+                    <xsl:element name="Annotations">
+                        <xsl:attribute name="Target">microsoft.graph.entitlementManagement/accessPackageAssignments</xsl:attribute>
+                        <xsl:call-template name="DeleteRestrictionsTemplate">
+                            <xsl:with-param name="deletable">false</xsl:with-param>
+                        </xsl:call-template>
+                    </xsl:element>
+                </xsl:when>
+            </xsl:choose>        
         </xsl:copy>
     </xsl:template>
 
diff --git a/transforms/csdl/preprocess_csdl_test_output.xml b/transforms/csdl/preprocess_csdl_test_output.xml
index b08e8e2b..26f29099 100644
--- a/transforms/csdl/preprocess_csdl_test_output.xml
+++ b/transforms/csdl/preprocess_csdl_test_output.xml
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <?xml-stylesheet type='text/xsl' href='preprocess_csdl.xsl'?>
 <edmx:Edmx Version="4.0" xmlns:edmx="http://docs.oasis-open.org/odata/ns/edmx">
   <edmx:DataServices>
@@ -562,11 +562,11 @@
             </Collection>
           </Annotation>
         </Property>
-      </EntityType>	  
-	  <EntityType Name="workbookFunctionResult" BaseType="graph.entity">
-		<Property Name="error" Type="Edm.String" />
-		<Property Name="value" Type="Edm.Untyped" />
-	  </EntityType>
+      </EntityType>
+      <EntityType Name="workbookFunctionResult" BaseType="graph.entity">
+        <Property Name="error" Type="Edm.String" />
+        <Property Name="value" Type="graph.Json" />
+      </EntityType>
       <EntityType Name="authenticationEventsFlow" BaseType="graph.entity" Abstract="true" OpenType="true">
         <Property Name="conditions" Type="graph.authenticationConditions">
           <Annotation Term="Org.OData.Core.V1.Description" String="The conditions representing the context of the authentication request that will be used to decide whether the events policy will be invoked." />
@@ -1190,9 +1190,9 @@
       </Function>
       <Action Name="days360" IsBound="true">
         <Parameter Name="bindparameter" Type="graph.workbookFunctions" />
-        <Parameter Name="startDate" Type="Edm.Untyped" />
-        <Parameter Name="endDate" Type="Edm.Untyped" />
-        <Parameter Name="method" Type="Edm.Untyped" />
+        <Parameter Name="startDate" Type="graph.Json" />
+        <Parameter Name="endDate" Type="graph.Json" />
+        <Parameter Name="method" Type="graph.Json" />
         <ReturnType Type="graph.workbookFunctionResult" />
       </Action>
       <Action Name="add" IsBound="true">
@@ -1518,6 +1518,13 @@
           </Record>
         </Annotation>
       </Annotations>
+      <Annotations Target="microsoft.graph.entitlementManagement/accessPackageAssignments">
+        <Annotation Term="Org.OData.Capabilities.V1.DeleteRestrictions">
+          <Record>
+            <PropertyValue Property="Deletable" Bool="false" />
+          </Record>
+        </Annotation>
+      </Annotations>
     </Schema>
     <Schema Namespace="microsoft.graph.callRecords" xmlns="http://docs.oasis-open.org/odata/ns/edm">
       <EnumType Name="callType">