diff --git a/Microsoft.SCIM.WebHostSample/Resources/SampleResourceTypes.cs b/Microsoft.SCIM.WebHostSample/Resources/SampleResourceTypes.cs
index 0524102f..589e9263 100644
--- a/Microsoft.SCIM.WebHostSample/Resources/SampleResourceTypes.cs
+++ b/Microsoft.SCIM.WebHostSample/Resources/SampleResourceTypes.cs
@@ -3,7 +3,8 @@
 namespace Microsoft.SCIM.WebHostSample.Resources
 {
     using System;
-
+    using System.Collections.Generic;
+    
     public class SampleResourceTypes
     {
         public static Core2ResourceType UserResourceType
@@ -14,7 +15,14 @@ public static Core2ResourceType UserResourceType
                 {
                     Identifier = Types.User,
                     Endpoint = new Uri($"{SampleConstants.SampleScimEndpoint}/Users"),
-                    Schema = SampleConstants.UserEnterpriseSchema
+                    Schema = $"{SampleConstants.Core2SchemaPrefix}{Types.User}",
+                    SchemaExtensions = new List<Core2SchemaExtensions>() {
+                        new Core2SchemaExtensions()
+                        {
+                            Schema = SampleConstants.UserEnterpriseSchema,
+                            Required = false
+                        }
+                    }
                 };
 
                 return userResource;
diff --git a/Microsoft.SystemForCrossDomainIdentityManagement/Schemas/AttributeNames.cs b/Microsoft.SystemForCrossDomainIdentityManagement/Schemas/AttributeNames.cs
index de302fff..ed35475d 100644
--- a/Microsoft.SystemForCrossDomainIdentityManagement/Schemas/AttributeNames.cs
+++ b/Microsoft.SystemForCrossDomainIdentityManagement/Schemas/AttributeNames.cs
@@ -80,6 +80,7 @@ public static class AttributeNames
         public const string ResourceType = "resourceType";
         public const string Returned = "returned";
         public const string Schema = "schema";
+        public const string SchemaExtensions = "schemaExtensions";
         public const string Schemas = "schemas";
         public const string SecurityEnabled = "securityEnabled";
         public const string Sort = "sort";
@@ -97,4 +98,4 @@ public static class AttributeNames
         public const string Version = "version";
         public const string Watermark = "watermark";
     }
-}
\ No newline at end of file
+}
diff --git a/Microsoft.SystemForCrossDomainIdentityManagement/Schemas/Core2ResourceType.cs b/Microsoft.SystemForCrossDomainIdentityManagement/Schemas/Core2ResourceType.cs
index d5c8c89e..56952b4a 100644
--- a/Microsoft.SystemForCrossDomainIdentityManagement/Schemas/Core2ResourceType.cs
+++ b/Microsoft.SystemForCrossDomainIdentityManagement/Schemas/Core2ResourceType.cs
@@ -5,6 +5,7 @@
 namespace Microsoft.SCIM
 {
     using System;
+    using System.Collections.Generic;
     using System.Runtime.Serialization;
 
     [DataContract]
@@ -57,6 +58,13 @@ public string Schema
             set;
         }
 
+        [DataMember(Name = AttributeNames.SchemaExtensions)]
+        public List<Core2SchemaExtensions> SchemaExtensions
+        {
+            get;
+            set;
+        }
+
         private void InitializeEndpoint(string value)
         {
             if (string.IsNullOrWhiteSpace(value))
@@ -85,4 +93,4 @@ private void OnSerializing(StreamingContext context)
             this.name = this.Identifier;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/Microsoft.SystemForCrossDomainIdentityManagement/Schemas/Core2SchemaExtensions.cs b/Microsoft.SystemForCrossDomainIdentityManagement/Schemas/Core2SchemaExtensions.cs
new file mode 100644
index 00000000..e08604ea
--- /dev/null
+++ b/Microsoft.SystemForCrossDomainIdentityManagement/Schemas/Core2SchemaExtensions.cs
@@ -0,0 +1,27 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace Microsoft.SCIM
+{
+    using System;
+    using System.Runtime.Serialization;
+
+    [DataContract]
+    public sealed class Core2SchemaExtensions
+    {
+        [DataMember(Name = AttributeNames.Schema, Order = 0)]
+        public string Schema
+        {
+            get;
+            set;
+        }
+
+        [DataMember(Name = AttributeNames.Required, Order = 1)]
+        public bool Required
+        {
+            get;
+            set;
+        }
+    }
+}