diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/DnsForwardingRulesetData.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/DnsForwardingRulesetData.cs
index e5aa441c5ca2..314944cebf94 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/DnsForwardingRulesetData.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/DnsForwardingRulesetData.cs
@@ -5,7 +5,9 @@
 
 #nullable disable
 
+using System;
 using System.Collections.Generic;
+using System.Linq;
 using Azure;
 using Azure.Core;
 using Azure.ResourceManager.DnsResolver.Models;
@@ -19,9 +21,16 @@ public partial class DnsForwardingRulesetData : TrackedResourceData
     {
         /// <summary> Initializes a new instance of DnsForwardingRulesetData. </summary>
         /// <param name="location"> The location. </param>
-        public DnsForwardingRulesetData(AzureLocation location) : base(location)
+        /// <param name="dnsResolverOutboundEndpoints"> The reference to the DNS resolver outbound endpoints that are used to route DNS queries matching the forwarding rules in the ruleset to the target DNS servers. </param>
+        /// <exception cref="ArgumentNullException"> <paramref name="dnsResolverOutboundEndpoints"/> is null. </exception>
+        public DnsForwardingRulesetData(AzureLocation location, IEnumerable<WritableSubResource> dnsResolverOutboundEndpoints) : base(location)
         {
-            DnsResolverOutboundEndpoints = new ChangeTrackingList<WritableSubResource>();
+            if (dnsResolverOutboundEndpoints == null)
+            {
+                throw new ArgumentNullException(nameof(dnsResolverOutboundEndpoints));
+            }
+
+            DnsResolverOutboundEndpoints = dnsResolverOutboundEndpoints.ToList();
         }
 
         /// <summary> Initializes a new instance of DnsForwardingRulesetData. </summary>
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/DnsResolverData.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/DnsResolverData.cs
index ba90be3f00d3..7a09945ae5be 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/DnsResolverData.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/DnsResolverData.cs
@@ -5,6 +5,7 @@
 
 #nullable disable
 
+using System;
 using System.Collections.Generic;
 using Azure;
 using Azure.Core;
@@ -19,8 +20,16 @@ public partial class DnsResolverData : TrackedResourceData
     {
         /// <summary> Initializes a new instance of DnsResolverData. </summary>
         /// <param name="location"> The location. </param>
-        public DnsResolverData(AzureLocation location) : base(location)
+        /// <param name="virtualNetwork"> The reference to the virtual network. This cannot be changed after creation. </param>
+        /// <exception cref="ArgumentNullException"> <paramref name="virtualNetwork"/> is null. </exception>
+        public DnsResolverData(AzureLocation location, WritableSubResource virtualNetwork) : base(location)
         {
+            if (virtualNetwork == null)
+            {
+                throw new ArgumentNullException(nameof(virtualNetwork));
+            }
+
+            VirtualNetwork = virtualNetwork;
         }
 
         /// <summary> Initializes a new instance of DnsResolverData. </summary>
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/ForwardingRuleData.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/ForwardingRuleData.cs
index 4723e61a6563..947b3ff76b3a 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/ForwardingRuleData.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/ForwardingRuleData.cs
@@ -5,7 +5,9 @@
 
 #nullable disable
 
+using System;
 using System.Collections.Generic;
+using System.Linq;
 using Azure;
 using Azure.Core;
 using Azure.ResourceManager.DnsResolver.Models;
@@ -17,9 +19,22 @@ namespace Azure.ResourceManager.DnsResolver
     public partial class ForwardingRuleData : ResourceData
     {
         /// <summary> Initializes a new instance of ForwardingRuleData. </summary>
-        public ForwardingRuleData()
+        /// <param name="domainName"> The domain name for the forwarding rule. </param>
+        /// <param name="targetDnsServers"> DNS servers to forward the DNS query to. </param>
+        /// <exception cref="ArgumentNullException"> <paramref name="domainName"/> or <paramref name="targetDnsServers"/> is null. </exception>
+        public ForwardingRuleData(string domainName, IEnumerable<TargetDnsServer> targetDnsServers)
         {
-            TargetDnsServers = new ChangeTrackingList<TargetDnsServer>();
+            if (domainName == null)
+            {
+                throw new ArgumentNullException(nameof(domainName));
+            }
+            if (targetDnsServers == null)
+            {
+                throw new ArgumentNullException(nameof(targetDnsServers));
+            }
+
+            DomainName = domainName;
+            TargetDnsServers = targetDnsServers.ToList();
             Metadata = new ChangeTrackingDictionary<string, string>();
         }
 
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/InboundEndpointData.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/InboundEndpointData.cs
index 09a573d0c849..ddd10fe2f1ee 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/InboundEndpointData.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/InboundEndpointData.cs
@@ -5,7 +5,9 @@
 
 #nullable disable
 
+using System;
 using System.Collections.Generic;
+using System.Linq;
 using Azure;
 using Azure.Core;
 using Azure.ResourceManager.DnsResolver.Models;
@@ -18,9 +20,16 @@ public partial class InboundEndpointData : TrackedResourceData
     {
         /// <summary> Initializes a new instance of InboundEndpointData. </summary>
         /// <param name="location"> The location. </param>
-        public InboundEndpointData(AzureLocation location) : base(location)
+        /// <param name="ipConfigurations"> IP configurations for the inbound endpoint. </param>
+        /// <exception cref="ArgumentNullException"> <paramref name="ipConfigurations"/> is null. </exception>
+        public InboundEndpointData(AzureLocation location, IEnumerable<IPConfiguration> ipConfigurations) : base(location)
         {
-            IPConfigurations = new ChangeTrackingList<IPConfiguration>();
+            if (ipConfigurations == null)
+            {
+                throw new ArgumentNullException(nameof(ipConfigurations));
+            }
+
+            IPConfigurations = ipConfigurations.ToList();
         }
 
         /// <summary> Initializes a new instance of InboundEndpointData. </summary>
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsForwardingRulesetData.Serialization.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsForwardingRulesetData.Serialization.cs
index 3aa9b7727003..a9e100308a77 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsForwardingRulesetData.Serialization.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsForwardingRulesetData.Serialization.cs
@@ -35,16 +35,13 @@ void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
             writer.WriteStringValue(Location);
             writer.WritePropertyName("properties");
             writer.WriteStartObject();
-            if (Optional.IsCollectionDefined(DnsResolverOutboundEndpoints))
+            writer.WritePropertyName("dnsResolverOutboundEndpoints");
+            writer.WriteStartArray();
+            foreach (var item in DnsResolverOutboundEndpoints)
             {
-                writer.WritePropertyName("dnsResolverOutboundEndpoints");
-                writer.WriteStartArray();
-                foreach (var item in DnsResolverOutboundEndpoints)
-                {
-                    JsonSerializer.Serialize(writer, item);
-                }
-                writer.WriteEndArray();
+                JsonSerializer.Serialize(writer, item);
             }
+            writer.WriteEndArray();
             writer.WriteEndObject();
             writer.WriteEndObject();
         }
@@ -58,7 +55,7 @@ internal static DnsForwardingRulesetData DeserializeDnsForwardingRulesetData(Jso
             string name = default;
             ResourceType type = default;
             Optional<SystemData> systemData = default;
-            Optional<IList<WritableSubResource>> dnsResolverOutboundEndpoints = default;
+            IList<WritableSubResource> dnsResolverOutboundEndpoints = default;
             Optional<ProvisioningState> provisioningState = default;
             Optional<string> resourceGuid = default;
             foreach (var property in element.EnumerateObject())
@@ -129,11 +126,6 @@ internal static DnsForwardingRulesetData DeserializeDnsForwardingRulesetData(Jso
                     {
                         if (property0.NameEquals("dnsResolverOutboundEndpoints"))
                         {
-                            if (property0.Value.ValueKind == JsonValueKind.Null)
-                            {
-                                property0.ThrowNonNullablePropertyIsNull();
-                                continue;
-                            }
                             List<WritableSubResource> array = new List<WritableSubResource>();
                             foreach (var item in property0.Value.EnumerateArray())
                             {
@@ -161,7 +153,7 @@ internal static DnsForwardingRulesetData DeserializeDnsForwardingRulesetData(Jso
                     continue;
                 }
             }
-            return new DnsForwardingRulesetData(id, name, type, systemData.Value, Optional.ToDictionary(tags), location, Optional.ToNullable(etag), Optional.ToList(dnsResolverOutboundEndpoints), Optional.ToNullable(provisioningState), resourceGuid.Value);
+            return new DnsForwardingRulesetData(id, name, type, systemData.Value, Optional.ToDictionary(tags), location, Optional.ToNullable(etag), dnsResolverOutboundEndpoints, Optional.ToNullable(provisioningState), resourceGuid.Value);
         }
     }
 }
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsForwardingRulesetPatch.Serialization.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsForwardingRulesetPatch.Serialization.cs
index 48711b5a9ff9..27c64991dcc1 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsForwardingRulesetPatch.Serialization.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsForwardingRulesetPatch.Serialization.cs
@@ -15,6 +15,16 @@ public partial class DnsForwardingRulesetPatch : IUtf8JsonSerializable
         void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
         {
             writer.WriteStartObject();
+            if (Optional.IsCollectionDefined(DnsResolverOutboundEndpoints))
+            {
+                writer.WritePropertyName("dnsResolverOutboundEndpoints");
+                writer.WriteStartArray();
+                foreach (var item in DnsResolverOutboundEndpoints)
+                {
+                    JsonSerializer.Serialize(writer, item);
+                }
+                writer.WriteEndArray();
+            }
             if (Optional.IsCollectionDefined(Tags))
             {
                 writer.WritePropertyName("tags");
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsForwardingRulesetPatch.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsForwardingRulesetPatch.cs
index e57f2d28b2de..6a2dc0a4efd5 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsForwardingRulesetPatch.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsForwardingRulesetPatch.cs
@@ -7,6 +7,7 @@
 
 using System.Collections.Generic;
 using Azure.Core;
+using Azure.ResourceManager.Resources.Models;
 
 namespace Azure.ResourceManager.DnsResolver.Models
 {
@@ -16,9 +17,12 @@ public partial class DnsForwardingRulesetPatch
         /// <summary> Initializes a new instance of DnsForwardingRulesetPatch. </summary>
         public DnsForwardingRulesetPatch()
         {
+            DnsResolverOutboundEndpoints = new ChangeTrackingList<WritableSubResource>();
             Tags = new ChangeTrackingDictionary<string, string>();
         }
 
+        /// <summary> The reference to the DNS resolver outbound endpoints that are used to route DNS queries matching the forwarding rules in the ruleset to the target DNS servers. </summary>
+        public IList<WritableSubResource> DnsResolverOutboundEndpoints { get; }
         /// <summary> Tags for DNS Resolver. </summary>
         public IDictionary<string, string> Tags { get; }
     }
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsResolverData.Serialization.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsResolverData.Serialization.cs
index cbf8b85a7e09..8951b9927c0a 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsResolverData.Serialization.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/DnsResolverData.Serialization.cs
@@ -35,12 +35,8 @@ void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
             writer.WriteStringValue(Location);
             writer.WritePropertyName("properties");
             writer.WriteStartObject();
-            if (Optional.IsDefined(VirtualNetwork))
-            {
-                writer.WritePropertyName("virtualNetwork");
-                JsonSerializer.Serialize(writer, VirtualNetwork);
-            }
-            writer.WriteEndObject();
+            writer.WritePropertyName("virtualNetwork");
+            JsonSerializer.Serialize(writer, VirtualNetwork); writer.WriteEndObject();
             writer.WriteEndObject();
         }
 
@@ -53,7 +49,7 @@ internal static DnsResolverData DeserializeDnsResolverData(JsonElement element)
             string name = default;
             ResourceType type = default;
             Optional<SystemData> systemData = default;
-            Optional<WritableSubResource> virtualNetwork = default;
+            WritableSubResource virtualNetwork = default;
             Optional<DnsResolverState> dnsResolverState = default;
             Optional<ProvisioningState> provisioningState = default;
             Optional<string> resourceGuid = default;
@@ -125,11 +121,6 @@ internal static DnsResolverData DeserializeDnsResolverData(JsonElement element)
                     {
                         if (property0.NameEquals("virtualNetwork"))
                         {
-                            if (property0.Value.ValueKind == JsonValueKind.Null)
-                            {
-                                property0.ThrowNonNullablePropertyIsNull();
-                                continue;
-                            }
                             virtualNetwork = JsonSerializer.Deserialize<WritableSubResource>(property0.Value.ToString());
                             continue;
                         }
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/ForwardingRuleData.Serialization.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/ForwardingRuleData.Serialization.cs
index e94cd78d3a54..6fd4c3aa1d14 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/ForwardingRuleData.Serialization.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/ForwardingRuleData.Serialization.cs
@@ -21,21 +21,15 @@ void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
             writer.WriteStartObject();
             writer.WritePropertyName("properties");
             writer.WriteStartObject();
-            if (Optional.IsDefined(DomainName))
+            writer.WritePropertyName("domainName");
+            writer.WriteStringValue(DomainName);
+            writer.WritePropertyName("targetDnsServers");
+            writer.WriteStartArray();
+            foreach (var item in TargetDnsServers)
             {
-                writer.WritePropertyName("domainName");
-                writer.WriteStringValue(DomainName);
-            }
-            if (Optional.IsCollectionDefined(TargetDnsServers))
-            {
-                writer.WritePropertyName("targetDnsServers");
-                writer.WriteStartArray();
-                foreach (var item in TargetDnsServers)
-                {
-                    writer.WriteObjectValue(item);
-                }
-                writer.WriteEndArray();
+                writer.WriteObjectValue(item);
             }
+            writer.WriteEndArray();
             if (Optional.IsCollectionDefined(Metadata))
             {
                 writer.WritePropertyName("metadata");
@@ -63,8 +57,8 @@ internal static ForwardingRuleData DeserializeForwardingRuleData(JsonElement ele
             string name = default;
             ResourceType type = default;
             Optional<SystemData> systemData = default;
-            Optional<string> domainName = default;
-            Optional<IList<TargetDnsServer>> targetDnsServers = default;
+            string domainName = default;
+            IList<TargetDnsServer> targetDnsServers = default;
             Optional<IDictionary<string, string>> metadata = default;
             Optional<ForwardingRuleState> forwardingRuleState = default;
             Optional<ProvisioningState> provisioningState = default;
@@ -121,11 +115,6 @@ internal static ForwardingRuleData DeserializeForwardingRuleData(JsonElement ele
                         }
                         if (property0.NameEquals("targetDnsServers"))
                         {
-                            if (property0.Value.ValueKind == JsonValueKind.Null)
-                            {
-                                property0.ThrowNonNullablePropertyIsNull();
-                                continue;
-                            }
                             List<TargetDnsServer> array = new List<TargetDnsServer>();
                             foreach (var item in property0.Value.EnumerateArray())
                             {
@@ -173,7 +162,7 @@ internal static ForwardingRuleData DeserializeForwardingRuleData(JsonElement ele
                     continue;
                 }
             }
-            return new ForwardingRuleData(id, name, type, systemData.Value, Optional.ToNullable(etag), domainName.Value, Optional.ToList(targetDnsServers), Optional.ToDictionary(metadata), Optional.ToNullable(forwardingRuleState), Optional.ToNullable(provisioningState));
+            return new ForwardingRuleData(id, name, type, systemData.Value, Optional.ToNullable(etag), domainName, targetDnsServers, Optional.ToDictionary(metadata), Optional.ToNullable(forwardingRuleState), Optional.ToNullable(provisioningState));
         }
     }
 }
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/IPConfiguration.Serialization.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/IPConfiguration.Serialization.cs
index 175f0f7a5ade..bcf6895e8dc1 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/IPConfiguration.Serialization.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/IPConfiguration.Serialization.cs
@@ -16,12 +16,8 @@ public partial class IPConfiguration : IUtf8JsonSerializable
         void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
         {
             writer.WriteStartObject();
-            if (Optional.IsDefined(Subnet))
-            {
-                writer.WritePropertyName("subnet");
-                JsonSerializer.Serialize(writer, Subnet);
-            }
-            if (Optional.IsDefined(PrivateIPAddress))
+            writer.WritePropertyName("subnet");
+            JsonSerializer.Serialize(writer, Subnet); if (Optional.IsDefined(PrivateIPAddress))
             {
                 writer.WritePropertyName("privateIpAddress");
                 writer.WriteStringValue(PrivateIPAddress);
@@ -36,18 +32,13 @@ void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
 
         internal static IPConfiguration DeserializeIPConfiguration(JsonElement element)
         {
-            Optional<WritableSubResource> subnet = default;
+            WritableSubResource subnet = default;
             Optional<string> privateIpAddress = default;
             Optional<IPAllocationMethod> privateIpAllocationMethod = default;
             foreach (var property in element.EnumerateObject())
             {
                 if (property.NameEquals("subnet"))
                 {
-                    if (property.Value.ValueKind == JsonValueKind.Null)
-                    {
-                        property.ThrowNonNullablePropertyIsNull();
-                        continue;
-                    }
                     subnet = JsonSerializer.Deserialize<WritableSubResource>(property.Value.ToString());
                     continue;
                 }
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/IPConfiguration.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/IPConfiguration.cs
index 3a1b45149e6d..6e7d2cd3ff51 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/IPConfiguration.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/IPConfiguration.cs
@@ -5,6 +5,7 @@
 
 #nullable disable
 
+using System;
 using Azure.Core;
 using Azure.ResourceManager.Resources.Models;
 
@@ -14,8 +15,16 @@ namespace Azure.ResourceManager.DnsResolver.Models
     public partial class IPConfiguration
     {
         /// <summary> Initializes a new instance of IPConfiguration. </summary>
-        public IPConfiguration()
+        /// <param name="subnet"> The reference to the subnet bound to the IP configuration. </param>
+        /// <exception cref="ArgumentNullException"> <paramref name="subnet"/> is null. </exception>
+        public IPConfiguration(WritableSubResource subnet)
         {
+            if (subnet == null)
+            {
+                throw new ArgumentNullException(nameof(subnet));
+            }
+
+            Subnet = subnet;
         }
 
         /// <summary> Initializes a new instance of IPConfiguration. </summary>
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/InboundEndpointData.Serialization.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/InboundEndpointData.Serialization.cs
index 63b4aa36696d..260f4c7820a4 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/InboundEndpointData.Serialization.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/InboundEndpointData.Serialization.cs
@@ -34,16 +34,13 @@ void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
             writer.WriteStringValue(Location);
             writer.WritePropertyName("properties");
             writer.WriteStartObject();
-            if (Optional.IsCollectionDefined(IPConfigurations))
+            writer.WritePropertyName("ipConfigurations");
+            writer.WriteStartArray();
+            foreach (var item in IPConfigurations)
             {
-                writer.WritePropertyName("ipConfigurations");
-                writer.WriteStartArray();
-                foreach (var item in IPConfigurations)
-                {
-                    writer.WriteObjectValue(item);
-                }
-                writer.WriteEndArray();
+                writer.WriteObjectValue(item);
             }
+            writer.WriteEndArray();
             writer.WriteEndObject();
             writer.WriteEndObject();
         }
@@ -57,7 +54,7 @@ internal static InboundEndpointData DeserializeInboundEndpointData(JsonElement e
             string name = default;
             ResourceType type = default;
             Optional<SystemData> systemData = default;
-            Optional<IList<IPConfiguration>> ipConfigurations = default;
+            IList<IPConfiguration> ipConfigurations = default;
             Optional<ProvisioningState> provisioningState = default;
             Optional<string> resourceGuid = default;
             foreach (var property in element.EnumerateObject())
@@ -128,11 +125,6 @@ internal static InboundEndpointData DeserializeInboundEndpointData(JsonElement e
                     {
                         if (property0.NameEquals("ipConfigurations"))
                         {
-                            if (property0.Value.ValueKind == JsonValueKind.Null)
-                            {
-                                property0.ThrowNonNullablePropertyIsNull();
-                                continue;
-                            }
                             List<IPConfiguration> array = new List<IPConfiguration>();
                             foreach (var item in property0.Value.EnumerateArray())
                             {
@@ -160,7 +152,7 @@ internal static InboundEndpointData DeserializeInboundEndpointData(JsonElement e
                     continue;
                 }
             }
-            return new InboundEndpointData(id, name, type, systemData.Value, Optional.ToDictionary(tags), location, Optional.ToNullable(etag), Optional.ToList(ipConfigurations), Optional.ToNullable(provisioningState), resourceGuid.Value);
+            return new InboundEndpointData(id, name, type, systemData.Value, Optional.ToDictionary(tags), location, Optional.ToNullable(etag), ipConfigurations, Optional.ToNullable(provisioningState), resourceGuid.Value);
         }
     }
 }
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/OutboundEndpointData.Serialization.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/OutboundEndpointData.Serialization.cs
index a1cc3cec689c..9b341cd0dc00 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/OutboundEndpointData.Serialization.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/OutboundEndpointData.Serialization.cs
@@ -35,12 +35,8 @@ void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
             writer.WriteStringValue(Location);
             writer.WritePropertyName("properties");
             writer.WriteStartObject();
-            if (Optional.IsDefined(Subnet))
-            {
-                writer.WritePropertyName("subnet");
-                JsonSerializer.Serialize(writer, Subnet);
-            }
-            writer.WriteEndObject();
+            writer.WritePropertyName("subnet");
+            JsonSerializer.Serialize(writer, Subnet); writer.WriteEndObject();
             writer.WriteEndObject();
         }
 
@@ -53,7 +49,7 @@ internal static OutboundEndpointData DeserializeOutboundEndpointData(JsonElement
             string name = default;
             ResourceType type = default;
             Optional<SystemData> systemData = default;
-            Optional<WritableSubResource> subnet = default;
+            WritableSubResource subnet = default;
             Optional<ProvisioningState> provisioningState = default;
             Optional<string> resourceGuid = default;
             foreach (var property in element.EnumerateObject())
@@ -124,11 +120,6 @@ internal static OutboundEndpointData DeserializeOutboundEndpointData(JsonElement
                     {
                         if (property0.NameEquals("subnet"))
                         {
-                            if (property0.Value.ValueKind == JsonValueKind.Null)
-                            {
-                                property0.ThrowNonNullablePropertyIsNull();
-                                continue;
-                            }
                             subnet = JsonSerializer.Deserialize<WritableSubResource>(property0.Value.ToString());
                             continue;
                         }
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/TargetDnsServer.Serialization.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/TargetDnsServer.Serialization.cs
index ed552ad54bff..db33e745d8a6 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/TargetDnsServer.Serialization.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/TargetDnsServer.Serialization.cs
@@ -15,11 +15,8 @@ public partial class TargetDnsServer : IUtf8JsonSerializable
         void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
         {
             writer.WriteStartObject();
-            if (Optional.IsDefined(IPAddress))
-            {
-                writer.WritePropertyName("ipAddress");
-                writer.WriteStringValue(IPAddress);
-            }
+            writer.WritePropertyName("ipAddress");
+            writer.WriteStringValue(IPAddress);
             if (Optional.IsDefined(Port))
             {
                 writer.WritePropertyName("port");
@@ -30,7 +27,7 @@ void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
 
         internal static TargetDnsServer DeserializeTargetDnsServer(JsonElement element)
         {
-            Optional<string> ipAddress = default;
+            string ipAddress = default;
             Optional<int> port = default;
             foreach (var property in element.EnumerateObject())
             {
@@ -50,7 +47,7 @@ internal static TargetDnsServer DeserializeTargetDnsServer(JsonElement element)
                     continue;
                 }
             }
-            return new TargetDnsServer(ipAddress.Value, Optional.ToNullable(port));
+            return new TargetDnsServer(ipAddress, Optional.ToNullable(port));
         }
     }
 }
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/TargetDnsServer.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/TargetDnsServer.cs
index 891a0da0efb2..3b75dda484c1 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/TargetDnsServer.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/TargetDnsServer.cs
@@ -5,14 +5,24 @@
 
 #nullable disable
 
+using System;
+
 namespace Azure.ResourceManager.DnsResolver.Models
 {
     /// <summary> Describes a server to forward the DNS queries to. </summary>
     public partial class TargetDnsServer
     {
         /// <summary> Initializes a new instance of TargetDnsServer. </summary>
-        public TargetDnsServer()
+        /// <param name="ipAddress"> DNS server IP address. </param>
+        /// <exception cref="ArgumentNullException"> <paramref name="ipAddress"/> is null. </exception>
+        public TargetDnsServer(string ipAddress)
         {
+            if (ipAddress == null)
+            {
+                throw new ArgumentNullException(nameof(ipAddress));
+            }
+
+            IPAddress = ipAddress;
         }
 
         /// <summary> Initializes a new instance of TargetDnsServer. </summary>
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/VirtualNetworkLinkData.Serialization.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/VirtualNetworkLinkData.Serialization.cs
index b32e17e009fb..baa4877a290e 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/VirtualNetworkLinkData.Serialization.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/Models/VirtualNetworkLinkData.Serialization.cs
@@ -22,12 +22,8 @@ void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
             writer.WriteStartObject();
             writer.WritePropertyName("properties");
             writer.WriteStartObject();
-            if (Optional.IsDefined(VirtualNetwork))
-            {
-                writer.WritePropertyName("virtualNetwork");
-                JsonSerializer.Serialize(writer, VirtualNetwork);
-            }
-            if (Optional.IsCollectionDefined(Metadata))
+            writer.WritePropertyName("virtualNetwork");
+            JsonSerializer.Serialize(writer, VirtualNetwork); if (Optional.IsCollectionDefined(Metadata))
             {
                 writer.WritePropertyName("metadata");
                 writer.WriteStartObject();
@@ -49,7 +45,7 @@ internal static VirtualNetworkLinkData DeserializeVirtualNetworkLinkData(JsonEle
             string name = default;
             ResourceType type = default;
             Optional<SystemData> systemData = default;
-            Optional<WritableSubResource> virtualNetwork = default;
+            WritableSubResource virtualNetwork = default;
             Optional<IDictionary<string, string>> metadata = default;
             Optional<ProvisioningState> provisioningState = default;
             foreach (var property in element.EnumerateObject())
@@ -100,11 +96,6 @@ internal static VirtualNetworkLinkData DeserializeVirtualNetworkLinkData(JsonEle
                     {
                         if (property0.NameEquals("virtualNetwork"))
                         {
-                            if (property0.Value.ValueKind == JsonValueKind.Null)
-                            {
-                                property0.ThrowNonNullablePropertyIsNull();
-                                continue;
-                            }
                             virtualNetwork = JsonSerializer.Deserialize<WritableSubResource>(property0.Value.ToString());
                             continue;
                         }
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/OutboundEndpointData.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/OutboundEndpointData.cs
index 4eebf96461df..b1b5db408967 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/OutboundEndpointData.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/OutboundEndpointData.cs
@@ -5,6 +5,7 @@
 
 #nullable disable
 
+using System;
 using System.Collections.Generic;
 using Azure;
 using Azure.Core;
@@ -19,8 +20,16 @@ public partial class OutboundEndpointData : TrackedResourceData
     {
         /// <summary> Initializes a new instance of OutboundEndpointData. </summary>
         /// <param name="location"> The location. </param>
-        public OutboundEndpointData(AzureLocation location) : base(location)
+        /// <param name="subnet"> The reference to the subnet used for the outbound endpoint. </param>
+        /// <exception cref="ArgumentNullException"> <paramref name="subnet"/> is null. </exception>
+        public OutboundEndpointData(AzureLocation location, WritableSubResource subnet) : base(location)
         {
+            if (subnet == null)
+            {
+                throw new ArgumentNullException(nameof(subnet));
+            }
+
+            Subnet = subnet;
         }
 
         /// <summary> Initializes a new instance of OutboundEndpointData. </summary>
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/DnsForwardingRulesetsRestOperations.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/DnsForwardingRulesetsRestOperations.cs
index 5572da066e25..f25f4001ff3a 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/DnsForwardingRulesetsRestOperations.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/DnsForwardingRulesetsRestOperations.cs
@@ -33,7 +33,7 @@ public DnsForwardingRulesetsRestOperations(HttpPipeline pipeline, string applica
         {
             _pipeline = pipeline ?? throw new ArgumentNullException(nameof(pipeline));
             _endpoint = endpoint ?? new Uri("https://management.azure.com");
-            _apiVersion = apiVersion ?? "2020-04-01-preview";
+            _apiVersion = apiVersion ?? "2022-07-01";
             _userAgent = new TelemetryDetails(GetType().Assembly, applicationId);
         }
 
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/DnsResolversRestOperations.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/DnsResolversRestOperations.cs
index 5b8a59332b50..9a41c637849c 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/DnsResolversRestOperations.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/DnsResolversRestOperations.cs
@@ -33,7 +33,7 @@ public DnsResolversRestOperations(HttpPipeline pipeline, string applicationId, U
         {
             _pipeline = pipeline ?? throw new ArgumentNullException(nameof(pipeline));
             _endpoint = endpoint ?? new Uri("https://management.azure.com");
-            _apiVersion = apiVersion ?? "2020-04-01-preview";
+            _apiVersion = apiVersion ?? "2022-07-01";
             _userAgent = new TelemetryDetails(GetType().Assembly, applicationId);
         }
 
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/ForwardingRulesRestOperations.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/ForwardingRulesRestOperations.cs
index 26399a8379dd..224c93b0764f 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/ForwardingRulesRestOperations.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/ForwardingRulesRestOperations.cs
@@ -33,7 +33,7 @@ public ForwardingRulesRestOperations(HttpPipeline pipeline, string applicationId
         {
             _pipeline = pipeline ?? throw new ArgumentNullException(nameof(pipeline));
             _endpoint = endpoint ?? new Uri("https://management.azure.com");
-            _apiVersion = apiVersion ?? "2020-04-01-preview";
+            _apiVersion = apiVersion ?? "2022-07-01";
             _userAgent = new TelemetryDetails(GetType().Assembly, applicationId);
         }
 
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/InboundEndpointsRestOperations.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/InboundEndpointsRestOperations.cs
index d7f8ce2bca6d..f04c2aaec4db 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/InboundEndpointsRestOperations.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/InboundEndpointsRestOperations.cs
@@ -33,7 +33,7 @@ public InboundEndpointsRestOperations(HttpPipeline pipeline, string applicationI
         {
             _pipeline = pipeline ?? throw new ArgumentNullException(nameof(pipeline));
             _endpoint = endpoint ?? new Uri("https://management.azure.com");
-            _apiVersion = apiVersion ?? "2020-04-01-preview";
+            _apiVersion = apiVersion ?? "2022-07-01";
             _userAgent = new TelemetryDetails(GetType().Assembly, applicationId);
         }
 
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/OutboundEndpointsRestOperations.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/OutboundEndpointsRestOperations.cs
index 0b85ddeafcfe..cac335d11324 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/OutboundEndpointsRestOperations.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/OutboundEndpointsRestOperations.cs
@@ -33,7 +33,7 @@ public OutboundEndpointsRestOperations(HttpPipeline pipeline, string application
         {
             _pipeline = pipeline ?? throw new ArgumentNullException(nameof(pipeline));
             _endpoint = endpoint ?? new Uri("https://management.azure.com");
-            _apiVersion = apiVersion ?? "2020-04-01-preview";
+            _apiVersion = apiVersion ?? "2022-07-01";
             _userAgent = new TelemetryDetails(GetType().Assembly, applicationId);
         }
 
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/VirtualNetworkLinksRestOperations.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/VirtualNetworkLinksRestOperations.cs
index 69260c008973..94c8ff3c1795 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/VirtualNetworkLinksRestOperations.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/RestOperations/VirtualNetworkLinksRestOperations.cs
@@ -33,7 +33,7 @@ public VirtualNetworkLinksRestOperations(HttpPipeline pipeline, string applicati
         {
             _pipeline = pipeline ?? throw new ArgumentNullException(nameof(pipeline));
             _endpoint = endpoint ?? new Uri("https://management.azure.com");
-            _apiVersion = apiVersion ?? "2020-04-01-preview";
+            _apiVersion = apiVersion ?? "2022-07-01";
             _userAgent = new TelemetryDetails(GetType().Assembly, applicationId);
         }
 
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/VirtualNetworkLinkData.cs b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/VirtualNetworkLinkData.cs
index 3b508224ca6e..558ac080a9c7 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/VirtualNetworkLinkData.cs
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/Generated/VirtualNetworkLinkData.cs
@@ -5,6 +5,7 @@
 
 #nullable disable
 
+using System;
 using System.Collections.Generic;
 using Azure;
 using Azure.Core;
@@ -18,8 +19,16 @@ namespace Azure.ResourceManager.DnsResolver
     public partial class VirtualNetworkLinkData : ResourceData
     {
         /// <summary> Initializes a new instance of VirtualNetworkLinkData. </summary>
-        public VirtualNetworkLinkData()
+        /// <param name="virtualNetwork"> The reference to the virtual network. This cannot be changed after creation. </param>
+        /// <exception cref="ArgumentNullException"> <paramref name="virtualNetwork"/> is null. </exception>
+        public VirtualNetworkLinkData(WritableSubResource virtualNetwork)
         {
+            if (virtualNetwork == null)
+            {
+                throw new ArgumentNullException(nameof(virtualNetwork));
+            }
+
+            VirtualNetwork = virtualNetwork;
             Metadata = new ChangeTrackingDictionary<string, string>();
         }
 
diff --git a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/autorest.md b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/autorest.md
index 9bc20664a7c8..db40627a0204 100644
--- a/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/autorest.md
+++ b/sdk/dnsresolver/Azure.ResourceManager.DnsResolver/src/autorest.md
@@ -5,7 +5,7 @@ Run `dotnet build /t:GenerateCode` to generate code.
 ``` yaml
 
 azure-arm: true
-require: https://raw.githubusercontent.com/Azure/azure-rest-api-specs/ccdf0b74eedb671fe038ed1a30a9be9f911ebc4f/specification/dnsresolver/resource-manager/readme.md
+require: https://github.com/Azure/azure-rest-api-specs/blob/9c07017e27a27ac282cb6ad189ba5b6010dabc82/specification/dnsresolver/resource-manager/readme.md
 library-name: dnsresolver
 namespace: Azure.ResourceManager.DnsResolver
 output-folder: $(this-folder)/Generated