diff --git a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/AttestationProvidersOperations.cs b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/AttestationProvidersOperations.cs
index 144126363202d..db3f30f9f470f 100644
--- a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/AttestationProvidersOperations.cs
+++ b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/AttestationProvidersOperations.cs
@@ -297,7 +297,7 @@ internal AttestationProvidersOperations(AttestationManagementClient client)
         /// <return>
         /// A response object containing the response body and response headers.
         /// </return>
-        public async Task<AzureOperationResponse<AttestationProvider>> CreateWithHttpMessagesAsync(string resourceGroupName, string providerName, AttestationServiceCreationParams creationParams = default(AttestationServiceCreationParams), Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken))
+        public async Task<AzureOperationResponse<AttestationProvider>> CreateWithHttpMessagesAsync(string resourceGroupName, string providerName, AttestationServiceCreationParams creationParams, Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken))
         {
             if (Client.SubscriptionId == null)
             {
@@ -333,6 +333,14 @@ internal AttestationProvidersOperations(AttestationManagementClient client)
             {
                 throw new ValidationException(ValidationRules.CannotBeNull, "providerName");
             }
+            if (creationParams == null)
+            {
+                throw new ValidationException(ValidationRules.CannotBeNull, "creationParams");
+            }
+            if (creationParams != null)
+            {
+                creationParams.Validate();
+            }
             // Tracing
             bool _shouldTrace = ServiceClientTracing.IsEnabled;
             string _invocationId = null;
@@ -506,6 +514,234 @@ internal AttestationProvidersOperations(AttestationManagementClient client)
             return _result;
         }
 
+        /// <summary>
+        /// Updates the Attestation Provider.
+        /// </summary>
+        /// <param name='resourceGroupName'>
+        /// The name of the resource group. The name is case insensitive.
+        /// </param>
+        /// <param name='providerName'>
+        /// Name of the attestation service
+        /// </param>
+        /// <param name='updateParams'>
+        /// Client supplied parameters.
+        /// </param>
+        /// <param name='customHeaders'>
+        /// Headers that will be added to request.
+        /// </param>
+        /// <param name='cancellationToken'>
+        /// The cancellation token.
+        /// </param>
+        /// <exception cref="CloudException">
+        /// Thrown when the operation returned an invalid status code
+        /// </exception>
+        /// <exception cref="SerializationException">
+        /// Thrown when unable to deserialize the response
+        /// </exception>
+        /// <exception cref="ValidationException">
+        /// Thrown when a required parameter is null
+        /// </exception>
+        /// <exception cref="System.ArgumentNullException">
+        /// Thrown when a required parameter is null
+        /// </exception>
+        /// <return>
+        /// A response object containing the response body and response headers.
+        /// </return>
+        public async Task<AzureOperationResponse<AttestationProvider>> UpdateWithHttpMessagesAsync(string resourceGroupName, string providerName, AttestationServicePatchParams updateParams, Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken))
+        {
+            if (Client.SubscriptionId == null)
+            {
+                throw new ValidationException(ValidationRules.CannotBeNull, "this.Client.SubscriptionId");
+            }
+            if (Client.SubscriptionId != null)
+            {
+                if (Client.SubscriptionId.Length < 1)
+                {
+                    throw new ValidationException(ValidationRules.MinLength, "Client.SubscriptionId", 1);
+                }
+            }
+            if (resourceGroupName == null)
+            {
+                throw new ValidationException(ValidationRules.CannotBeNull, "resourceGroupName");
+            }
+            if (resourceGroupName != null)
+            {
+                if (resourceGroupName.Length > 90)
+                {
+                    throw new ValidationException(ValidationRules.MaxLength, "resourceGroupName", 90);
+                }
+                if (resourceGroupName.Length < 1)
+                {
+                    throw new ValidationException(ValidationRules.MinLength, "resourceGroupName", 1);
+                }
+                if (!System.Text.RegularExpressions.Regex.IsMatch(resourceGroupName, "^[-\\w\\._\\(\\)]+$"))
+                {
+                    throw new ValidationException(ValidationRules.Pattern, "resourceGroupName", "^[-\\w\\._\\(\\)]+$");
+                }
+            }
+            if (providerName == null)
+            {
+                throw new ValidationException(ValidationRules.CannotBeNull, "providerName");
+            }
+            if (updateParams == null)
+            {
+                throw new ValidationException(ValidationRules.CannotBeNull, "updateParams");
+            }
+            // Tracing
+            bool _shouldTrace = ServiceClientTracing.IsEnabled;
+            string _invocationId = null;
+            if (_shouldTrace)
+            {
+                _invocationId = ServiceClientTracing.NextInvocationId.ToString();
+                Dictionary<string, object> tracingParameters = new Dictionary<string, object>();
+                tracingParameters.Add("resourceGroupName", resourceGroupName);
+                tracingParameters.Add("providerName", providerName);
+                tracingParameters.Add("updateParams", updateParams);
+                tracingParameters.Add("cancellationToken", cancellationToken);
+                ServiceClientTracing.Enter(_invocationId, this, "Update", tracingParameters);
+            }
+            // Construct URL
+            var _baseUrl = Client.BaseUri.AbsoluteUri;
+            var _url = new System.Uri(new System.Uri(_baseUrl + (_baseUrl.EndsWith("/") ? "" : "/")), "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Attestation/attestationProviders/{providerName}").ToString();
+            _url = _url.Replace("{subscriptionId}", System.Uri.EscapeDataString(Client.SubscriptionId));
+            _url = _url.Replace("{resourceGroupName}", System.Uri.EscapeDataString(resourceGroupName));
+            _url = _url.Replace("{providerName}", System.Uri.EscapeDataString(providerName));
+            List<string> _queryParameters = new List<string>();
+            if (Client.ApiVersion != null)
+            {
+                _queryParameters.Add(string.Format("api-version={0}", System.Uri.EscapeDataString(Client.ApiVersion)));
+            }
+            if (_queryParameters.Count > 0)
+            {
+                _url += (_url.Contains("?") ? "&" : "?") + string.Join("&", _queryParameters);
+            }
+            // Create HTTP transport objects
+            var _httpRequest = new HttpRequestMessage();
+            HttpResponseMessage _httpResponse = null;
+            _httpRequest.Method = new HttpMethod("PATCH");
+            _httpRequest.RequestUri = new System.Uri(_url);
+            // Set Headers
+            if (Client.GenerateClientRequestId != null && Client.GenerateClientRequestId.Value)
+            {
+                _httpRequest.Headers.TryAddWithoutValidation("x-ms-client-request-id", System.Guid.NewGuid().ToString());
+            }
+            if (Client.AcceptLanguage != null)
+            {
+                if (_httpRequest.Headers.Contains("accept-language"))
+                {
+                    _httpRequest.Headers.Remove("accept-language");
+                }
+                _httpRequest.Headers.TryAddWithoutValidation("accept-language", Client.AcceptLanguage);
+            }
+
+
+            if (customHeaders != null)
+            {
+                foreach(var _header in customHeaders)
+                {
+                    if (_httpRequest.Headers.Contains(_header.Key))
+                    {
+                        _httpRequest.Headers.Remove(_header.Key);
+                    }
+                    _httpRequest.Headers.TryAddWithoutValidation(_header.Key, _header.Value);
+                }
+            }
+
+            // Serialize Request
+            string _requestContent = null;
+            if(updateParams != null)
+            {
+                _requestContent = Rest.Serialization.SafeJsonConvert.SerializeObject(updateParams, Client.SerializationSettings);
+                _httpRequest.Content = new StringContent(_requestContent, System.Text.Encoding.UTF8);
+                _httpRequest.Content.Headers.ContentType =System.Net.Http.Headers.MediaTypeHeaderValue.Parse("application/json; charset=utf-8");
+            }
+            // Set Credentials
+            if (Client.Credentials != null)
+            {
+                cancellationToken.ThrowIfCancellationRequested();
+                await Client.Credentials.ProcessHttpRequestAsync(_httpRequest, cancellationToken).ConfigureAwait(false);
+            }
+            // Send Request
+            if (_shouldTrace)
+            {
+                ServiceClientTracing.SendRequest(_invocationId, _httpRequest);
+            }
+            cancellationToken.ThrowIfCancellationRequested();
+            _httpResponse = await Client.HttpClient.SendAsync(_httpRequest, cancellationToken).ConfigureAwait(false);
+            if (_shouldTrace)
+            {
+                ServiceClientTracing.ReceiveResponse(_invocationId, _httpResponse);
+            }
+            HttpStatusCode _statusCode = _httpResponse.StatusCode;
+            cancellationToken.ThrowIfCancellationRequested();
+            string _responseContent = null;
+            if ((int)_statusCode != 200)
+            {
+                var ex = new CloudException(string.Format("Operation returned an invalid status code '{0}'", _statusCode));
+                try
+                {
+                    _responseContent = await _httpResponse.Content.ReadAsStringAsync().ConfigureAwait(false);
+                    CloudError _errorBody =  Rest.Serialization.SafeJsonConvert.DeserializeObject<CloudError>(_responseContent, Client.DeserializationSettings);
+                    if (_errorBody != null)
+                    {
+                        ex = new CloudException(_errorBody.Message);
+                        ex.Body = _errorBody;
+                    }
+                }
+                catch (JsonException)
+                {
+                    // Ignore the exception
+                }
+                ex.Request = new HttpRequestMessageWrapper(_httpRequest, _requestContent);
+                ex.Response = new HttpResponseMessageWrapper(_httpResponse, _responseContent);
+                if (_httpResponse.Headers.Contains("x-ms-request-id"))
+                {
+                    ex.RequestId = _httpResponse.Headers.GetValues("x-ms-request-id").FirstOrDefault();
+                }
+                if (_shouldTrace)
+                {
+                    ServiceClientTracing.Error(_invocationId, ex);
+                }
+                _httpRequest.Dispose();
+                if (_httpResponse != null)
+                {
+                    _httpResponse.Dispose();
+                }
+                throw ex;
+            }
+            // Create Result
+            var _result = new AzureOperationResponse<AttestationProvider>();
+            _result.Request = _httpRequest;
+            _result.Response = _httpResponse;
+            if (_httpResponse.Headers.Contains("x-ms-request-id"))
+            {
+                _result.RequestId = _httpResponse.Headers.GetValues("x-ms-request-id").FirstOrDefault();
+            }
+            // Deserialize Response
+            if ((int)_statusCode == 200)
+            {
+                _responseContent = await _httpResponse.Content.ReadAsStringAsync().ConfigureAwait(false);
+                try
+                {
+                    _result.Body = Rest.Serialization.SafeJsonConvert.DeserializeObject<AttestationProvider>(_responseContent, Client.DeserializationSettings);
+                }
+                catch (JsonException ex)
+                {
+                    _httpRequest.Dispose();
+                    if (_httpResponse != null)
+                    {
+                        _httpResponse.Dispose();
+                    }
+                    throw new SerializationException("Unable to deserialize the response.", _responseContent, ex);
+                }
+            }
+            if (_shouldTrace)
+            {
+                ServiceClientTracing.Exit(_invocationId, _result);
+            }
+            return _result;
+        }
+
         /// <summary>
         /// Delete Attestation Service.
         /// </summary>
diff --git a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/AttestationProvidersOperationsExtensions.cs b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/AttestationProvidersOperationsExtensions.cs
index b72ced3bf7424..f1cc4c0daca72 100644
--- a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/AttestationProvidersOperationsExtensions.cs
+++ b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/AttestationProvidersOperationsExtensions.cs
@@ -76,7 +76,7 @@ public static AttestationProvider Get(this IAttestationProvidersOperations opera
             /// <param name='creationParams'>
             /// Client supplied parameters.
             /// </param>
-            public static AttestationProvider Create(this IAttestationProvidersOperations operations, string resourceGroupName, string providerName, AttestationServiceCreationParams creationParams = default(AttestationServiceCreationParams))
+            public static AttestationProvider Create(this IAttestationProvidersOperations operations, string resourceGroupName, string providerName, AttestationServiceCreationParams creationParams)
             {
                 return operations.CreateAsync(resourceGroupName, providerName, creationParams).GetAwaiter().GetResult();
             }
@@ -99,7 +99,7 @@ public static AttestationProvider Get(this IAttestationProvidersOperations opera
             /// <param name='cancellationToken'>
             /// The cancellation token.
             /// </param>
-            public static async Task<AttestationProvider> CreateAsync(this IAttestationProvidersOperations operations, string resourceGroupName, string providerName, AttestationServiceCreationParams creationParams = default(AttestationServiceCreationParams), CancellationToken cancellationToken = default(CancellationToken))
+            public static async Task<AttestationProvider> CreateAsync(this IAttestationProvidersOperations operations, string resourceGroupName, string providerName, AttestationServiceCreationParams creationParams, CancellationToken cancellationToken = default(CancellationToken))
             {
                 using (var _result = await operations.CreateWithHttpMessagesAsync(resourceGroupName, providerName, creationParams, null, cancellationToken).ConfigureAwait(false))
                 {
@@ -107,6 +107,52 @@ public static AttestationProvider Get(this IAttestationProvidersOperations opera
                 }
             }
 
+            /// <summary>
+            /// Updates the Attestation Provider.
+            /// </summary>
+            /// <param name='operations'>
+            /// The operations group for this extension method.
+            /// </param>
+            /// <param name='resourceGroupName'>
+            /// The name of the resource group. The name is case insensitive.
+            /// </param>
+            /// <param name='providerName'>
+            /// Name of the attestation service
+            /// </param>
+            /// <param name='updateParams'>
+            /// Client supplied parameters.
+            /// </param>
+            public static AttestationProvider Update(this IAttestationProvidersOperations operations, string resourceGroupName, string providerName, AttestationServicePatchParams updateParams)
+            {
+                return operations.UpdateAsync(resourceGroupName, providerName, updateParams).GetAwaiter().GetResult();
+            }
+
+            /// <summary>
+            /// Updates the Attestation Provider.
+            /// </summary>
+            /// <param name='operations'>
+            /// The operations group for this extension method.
+            /// </param>
+            /// <param name='resourceGroupName'>
+            /// The name of the resource group. The name is case insensitive.
+            /// </param>
+            /// <param name='providerName'>
+            /// Name of the attestation service
+            /// </param>
+            /// <param name='updateParams'>
+            /// Client supplied parameters.
+            /// </param>
+            /// <param name='cancellationToken'>
+            /// The cancellation token.
+            /// </param>
+            public static async Task<AttestationProvider> UpdateAsync(this IAttestationProvidersOperations operations, string resourceGroupName, string providerName, AttestationServicePatchParams updateParams, CancellationToken cancellationToken = default(CancellationToken))
+            {
+                using (var _result = await operations.UpdateWithHttpMessagesAsync(resourceGroupName, providerName, updateParams, null, cancellationToken).ConfigureAwait(false))
+                {
+                    return _result.Body;
+                }
+            }
+
             /// <summary>
             /// Delete Attestation Service.
             /// </summary>
diff --git a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/IAttestationProvidersOperations.cs b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/IAttestationProvidersOperations.cs
index 697445043c275..be889a17ae2c8 100644
--- a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/IAttestationProvidersOperations.cs
+++ b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/IAttestationProvidersOperations.cs
@@ -75,7 +75,35 @@ public partial interface IAttestationProvidersOperations
         /// <exception cref="Microsoft.Rest.ValidationException">
         /// Thrown when a required parameter is null
         /// </exception>
-        Task<AzureOperationResponse<AttestationProvider>> CreateWithHttpMessagesAsync(string resourceGroupName, string providerName, AttestationServiceCreationParams creationParams = default(AttestationServiceCreationParams), Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken));
+        Task<AzureOperationResponse<AttestationProvider>> CreateWithHttpMessagesAsync(string resourceGroupName, string providerName, AttestationServiceCreationParams creationParams, Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken));
+        /// <summary>
+        /// Updates the Attestation Provider.
+        /// </summary>
+        /// <param name='resourceGroupName'>
+        /// The name of the resource group. The name is case insensitive.
+        /// </param>
+        /// <param name='providerName'>
+        /// Name of the attestation service
+        /// </param>
+        /// <param name='updateParams'>
+        /// Client supplied parameters.
+        /// </param>
+        /// <param name='customHeaders'>
+        /// The headers that will be added to request.
+        /// </param>
+        /// <param name='cancellationToken'>
+        /// The cancellation token.
+        /// </param>
+        /// <exception cref="Microsoft.Rest.Azure.CloudException">
+        /// Thrown when the operation returned an invalid status code
+        /// </exception>
+        /// <exception cref="Microsoft.Rest.SerializationException">
+        /// Thrown when unable to deserialize the response
+        /// </exception>
+        /// <exception cref="Microsoft.Rest.ValidationException">
+        /// Thrown when a required parameter is null
+        /// </exception>
+        Task<AzureOperationResponse<AttestationProvider>> UpdateWithHttpMessagesAsync(string resourceGroupName, string providerName, AttestationServicePatchParams updateParams, Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken));
         /// <summary>
         /// Delete Attestation Service.
         /// </summary>
diff --git a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationProvider.cs b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationProvider.cs
index f695ddc18d4bd..f62c9c9d8376b 100644
--- a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationProvider.cs
+++ b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationProvider.cs
@@ -13,13 +13,15 @@ namespace Microsoft.Azure.Management.Attestation.Models
     using Microsoft.Rest;
     using Microsoft.Rest.Serialization;
     using Newtonsoft.Json;
+    using System.Collections;
+    using System.Collections.Generic;
     using System.Linq;
 
     /// <summary>
     /// Attestation service response message.
     /// </summary>
     [Rest.Serialization.JsonTransformation]
-    public partial class AttestationProvider : Resource
+    public partial class AttestationProvider : TrackedResource
     {
         /// <summary>
         /// Initializes a new instance of the AttestationProvider class.
@@ -32,6 +34,8 @@ public AttestationProvider()
         /// <summary>
         /// Initializes a new instance of the AttestationProvider class.
         /// </summary>
+        /// <param name="location">The geo-location where the resource
+        /// lives</param>
         /// <param name="status">Status of attestation service. Possible values
         /// include: 'Ready', 'NotReady', 'Error'</param>
         /// <param name="id">Fully qualified resource Id for the resource. Ex -
@@ -40,10 +44,14 @@ public AttestationProvider()
         /// <param name="type">The type of the resource. Ex-
         /// Microsoft.Compute/virtualMachines or
         /// Microsoft.Storage/storageAccounts.</param>
+        /// <param name="tags">Resource tags.</param>
+        /// <param name="trustModel">Trust model for the attestation service
+        /// instance.</param>
         /// <param name="attestUri">Gets the uri of attestation service</param>
-        public AttestationProvider(string status, string id = default(string), string name = default(string), string type = default(string), string attestUri = default(string))
-            : base(id, name, type)
+        public AttestationProvider(string location, string status, string id = default(string), string name = default(string), string type = default(string), IDictionary<string, string> tags = default(IDictionary<string, string>), string trustModel = default(string), string attestUri = default(string))
+            : base(location, id, name, type, tags)
         {
+            TrustModel = trustModel;
             Status = status;
             AttestUri = attestUri;
             CustomInit();
@@ -54,6 +62,12 @@ public AttestationProvider()
         /// </summary>
         partial void CustomInit();
 
+        /// <summary>
+        /// Gets or sets trust model for the attestation service instance.
+        /// </summary>
+        [JsonProperty(PropertyName = "properties.trustModel")]
+        public string TrustModel { get; set; }
+
         /// <summary>
         /// Gets or sets status of attestation service. Possible values
         /// include: 'Ready', 'NotReady', 'Error'
@@ -73,8 +87,9 @@ public AttestationProvider()
         /// <exception cref="ValidationException">
         /// Thrown if validation fails
         /// </exception>
-        public virtual void Validate()
+        public override void Validate()
         {
+            base.Validate();
             if (Status == null)
             {
                 throw new ValidationException(ValidationRules.CannotBeNull, "Status");
diff --git a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationServiceCreationParams.cs b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationServiceCreationParams.cs
index c60d0e0f78de7..8f6f8d969aaa1 100644
--- a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationServiceCreationParams.cs
+++ b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationServiceCreationParams.cs
@@ -10,13 +10,17 @@
 
 namespace Microsoft.Azure.Management.Attestation.Models
 {
+    using Microsoft.Rest;
+    using Microsoft.Rest.Azure;
     using Newtonsoft.Json;
+    using System.Collections;
+    using System.Collections.Generic;
     using System.Linq;
 
     /// <summary>
-    /// Client supplied parameters passed to attestation service.
+    /// Parameters for creating an attestation service instance
     /// </summary>
-    public partial class AttestationServiceCreationParams
+    public partial class AttestationServiceCreationParams : IResource
     {
         /// <summary>
         /// Initializes a new instance of the AttestationServiceCreationParams
@@ -31,15 +35,17 @@ public AttestationServiceCreationParams()
         /// Initializes a new instance of the AttestationServiceCreationParams
         /// class.
         /// </summary>
-        /// <param name="attestationPolicy">Name of attestation policy.</param>
-        /// <param name="policySigningCertificates">JSON Web Key Set defining a
-        /// set of X.509 Certificates that will represent the parent
-        /// certificate for the signing certificate used for policy
-        /// operations</param>
-        public AttestationServiceCreationParams(string attestationPolicy = default(string), JSONWebKeySet policySigningCertificates = default(JSONWebKeySet))
+        /// <param name="location">The supported Azure location where the
+        /// attestation service instance should be created.</param>
+        /// <param name="properties">Properties of the attestation service
+        /// instance</param>
+        /// <param name="tags">The tags that will be assigned to the
+        /// attestation service instance.</param>
+        public AttestationServiceCreationParams(string location, AttestationServiceCreationSpecificParams properties, IDictionary<string, string> tags = default(IDictionary<string, string>))
         {
-            AttestationPolicy = attestationPolicy;
-            PolicySigningCertificates = policySigningCertificates;
+            Location = location;
+            Tags = tags;
+            Properties = properties;
             CustomInit();
         }
 
@@ -49,18 +55,41 @@ public AttestationServiceCreationParams()
         partial void CustomInit();
 
         /// <summary>
-        /// Gets or sets name of attestation policy.
+        /// Gets or sets the supported Azure location where the attestation
+        /// service instance should be created.
         /// </summary>
-        [JsonProperty(PropertyName = "attestationPolicy")]
-        public string AttestationPolicy { get; set; }
+        [JsonProperty(PropertyName = "location")]
+        public string Location { get; set; }
 
         /// <summary>
-        /// Gets or sets JSON Web Key Set defining a set of X.509 Certificates
-        /// that will represent the parent certificate for the signing
-        /// certificate used for policy operations
+        /// Gets or sets the tags that will be assigned to the attestation
+        /// service instance.
         /// </summary>
-        [JsonProperty(PropertyName = "policySigningCertificates")]
-        public JSONWebKeySet PolicySigningCertificates { get; set; }
+        [JsonProperty(PropertyName = "tags")]
+        public IDictionary<string, string> Tags { get; set; }
 
+        /// <summary>
+        /// Gets or sets properties of the attestation service instance
+        /// </summary>
+        [JsonProperty(PropertyName = "properties")]
+        public AttestationServiceCreationSpecificParams Properties { get; set; }
+
+        /// <summary>
+        /// Validate the object.
+        /// </summary>
+        /// <exception cref="ValidationException">
+        /// Thrown if validation fails
+        /// </exception>
+        public virtual void Validate()
+        {
+            if (Location == null)
+            {
+                throw new ValidationException(ValidationRules.CannotBeNull, "Location");
+            }
+            if (Properties == null)
+            {
+                throw new ValidationException(ValidationRules.CannotBeNull, "Properties");
+            }
+        }
     }
 }
diff --git a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationServiceCreationSpecificParams.cs b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationServiceCreationSpecificParams.cs
new file mode 100644
index 0000000000000..b9ba66c064bd4
--- /dev/null
+++ b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationServiceCreationSpecificParams.cs
@@ -0,0 +1,67 @@
+// <auto-generated>
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for
+// license information.
+//
+// Code generated by Microsoft (R) AutoRest Code Generator.
+// Changes may cause incorrect behavior and will be lost if the code is
+// regenerated.
+// </auto-generated>
+
+namespace Microsoft.Azure.Management.Attestation.Models
+{
+    using Newtonsoft.Json;
+    using System.Linq;
+
+    /// <summary>
+    /// Client supplied parameters used to create a new attestation service
+    /// instance.
+    /// </summary>
+    public partial class AttestationServiceCreationSpecificParams
+    {
+        /// <summary>
+        /// Initializes a new instance of the
+        /// AttestationServiceCreationSpecificParams class.
+        /// </summary>
+        public AttestationServiceCreationSpecificParams()
+        {
+            CustomInit();
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the
+        /// AttestationServiceCreationSpecificParams class.
+        /// </summary>
+        /// <param name="attestationPolicy">Name of attestation policy.</param>
+        /// <param name="policySigningCertificates">JSON Web Key Set defining a
+        /// set of X.509 Certificates that will represent the parent
+        /// certificate for the signing certificate used for policy
+        /// operations</param>
+        public AttestationServiceCreationSpecificParams(string attestationPolicy = default(string), JSONWebKeySet policySigningCertificates = default(JSONWebKeySet))
+        {
+            AttestationPolicy = attestationPolicy;
+            PolicySigningCertificates = policySigningCertificates;
+            CustomInit();
+        }
+
+        /// <summary>
+        /// An initialization method that performs custom operations like setting defaults
+        /// </summary>
+        partial void CustomInit();
+
+        /// <summary>
+        /// Gets or sets name of attestation policy.
+        /// </summary>
+        [JsonProperty(PropertyName = "attestationPolicy")]
+        public string AttestationPolicy { get; set; }
+
+        /// <summary>
+        /// Gets or sets JSON Web Key Set defining a set of X.509 Certificates
+        /// that will represent the parent certificate for the signing
+        /// certificate used for policy operations
+        /// </summary>
+        [JsonProperty(PropertyName = "policySigningCertificates")]
+        public JSONWebKeySet PolicySigningCertificates { get; set; }
+
+    }
+}
diff --git a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationServicePatchParams.cs b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationServicePatchParams.cs
new file mode 100644
index 0000000000000..4aedda3552252
--- /dev/null
+++ b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/Models/AttestationServicePatchParams.cs
@@ -0,0 +1,59 @@
+// <auto-generated>
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for
+// license information.
+//
+// Code generated by Microsoft (R) AutoRest Code Generator.
+// Changes may cause incorrect behavior and will be lost if the code is
+// regenerated.
+// </auto-generated>
+
+namespace Microsoft.Azure.Management.Attestation.Models
+{
+    using Microsoft.Rest;
+    using Microsoft.Rest.Azure;
+    using Newtonsoft.Json;
+    using System.Collections;
+    using System.Collections.Generic;
+    using System.Linq;
+
+    /// <summary>
+    /// Parameters for patching an attestation service instance
+    /// </summary>
+    public partial class AttestationServicePatchParams : IResource
+    {
+        /// <summary>
+        /// Initializes a new instance of the AttestationServicePatchParams
+        /// class.
+        /// </summary>
+        public AttestationServicePatchParams()
+        {
+            CustomInit();
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the AttestationServicePatchParams
+        /// class.
+        /// </summary>
+        /// <param name="tags">The tags that will be assigned to the
+        /// attestation service instance.</param>
+        public AttestationServicePatchParams(IDictionary<string, string> tags = default(IDictionary<string, string>))
+        {
+            Tags = tags;
+            CustomInit();
+        }
+
+        /// <summary>
+        /// An initialization method that performs custom operations like setting defaults
+        /// </summary>
+        partial void CustomInit();
+
+        /// <summary>
+        /// Gets or sets the tags that will be assigned to the attestation
+        /// service instance.
+        /// </summary>
+        [JsonProperty(PropertyName = "tags")]
+        public IDictionary<string, string> Tags { get; set; }
+
+    }
+}
diff --git a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/SdkInfo_AttestationManagementClient.cs b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/SdkInfo_AttestationManagementClient.cs
index c2eacf2991390..d73cbdde8c921 100644
--- a/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/SdkInfo_AttestationManagementClient.cs
+++ b/sdk/attestation/Microsoft.Azure.Management.Attestation/src/Generated/SdkInfo_AttestationManagementClient.cs
@@ -24,16 +24,5 @@ public static IEnumerable<Tuple<string, string, string>> ApiInfo_AttestationMana
               }.AsEnumerable();
           }
       }
-      // BEGIN: Code Generation Metadata Section
-      public static readonly String AutoRestVersion = "latest";
-      public static readonly String AutoRestBootStrapperVersion = "autorest@2.0.4407";
-      public static readonly String AutoRestCmdExecuted = "cmd.exe /c autorest.cmd https://github.com/Azure/azure-rest-api-specs/blob/master/specification/attestation/resource-manager/readme.md --csharp --version=latest --reflect-api-versions --csharp-sdks-folder=C:\\azure-sdk-for-net\\sdk";
-      public static readonly String GithubForkName = "Azure";
-      public static readonly String GithubBranchName = "master";
-      public static readonly String GithubCommidId = "65862acc6ca8d117bff3258d409d8a9d8244f773";
-      public static readonly String CodeGenerationErrors = "";
-      public static readonly String GithubRepoName = "azure-rest-api-specs";
-      // END: Code Generation Metadata Section
   }
 }
-