diff --git a/.dotnet.azure/.tests.staging/AoaiTestBase.cs b/.dotnet.azure/.tests.staging/AoaiTestBase.cs
index c73cf63dd..a04fef9ea 100644
--- a/.dotnet.azure/.tests.staging/AoaiTestBase.cs
+++ b/.dotnet.azure/.tests.staging/AoaiTestBase.cs
@@ -1,8 +1,6 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License.
 
-#nullable enable
-
 using System;
 using System.ClientModel;
 using System.ClientModel.Primitives;
@@ -172,10 +170,10 @@ public TClient GetTestClient()
     /// test configuration.</param>
     /// <param name="keyCredential">(Optional) The key credential to use instead of the one from the configuration.</param>
     public virtual AzureOpenAIClient GetTestTopLevelClient(
-        object? config, // IConfiguration? config,
-        object? options = null, // TestClientOptions? options = null,
-        TokenCredential? tokenCredential = null,
-        ApiKeyCredential? keyCredential = null)
+        object config, // IConfiguration? config,
+        object options = null, // TestClientOptions? options = null,
+        TokenCredential tokenCredential = null,
+        ApiKeyCredential keyCredential = null)
     {
         string rawEndpoint = Environment.GetEnvironmentVariable("AZURE_OPENAI_ENDPOINT");
         Uri endpoint = new(rawEndpoint);
@@ -612,7 +610,7 @@ protected virtual TModel ValidateAndParse<TModel>(ClientResult result) where TMo
     {
         var response = ValidateClientResultResponse(result);
 
-        TModel? model = ModelReaderWriter.Read<TModel>(response.Content, ModelReaderWriterOptions.Json);
+        TModel model = ModelReaderWriter.Read<TModel>(response.Content, ModelReaderWriterOptions.Json);
         Assert.That(model, Is.Not.Null);
         return model!;
     }
diff --git a/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureAssistantsPageEnumerator.cs b/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureAssistantsPageEnumerator.cs
index d406c67da..9b1975a15 100644
--- a/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureAssistantsPageEnumerator.cs
+++ b/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureAssistantsPageEnumerator.cs
@@ -34,7 +34,7 @@ internal override ClientResult GetAssistants(int? limit, string order, string af
         return ClientResult.FromResponse(Pipeline.ProcessMessage(message, options));
     }
 
-    private new PipelineMessage CreateGetAssistantsRequest(int? limit, string order, string after, string before, RequestOptions options)
+    private PipelineMessage CreateGetAssistantsRequest(int? limit, string order, string after, string before, RequestOptions options)
         => new AzureOpenAIPipelineMessageBuilder(Pipeline, _endpoint, _apiVersion)
             .WithAssistantsHeader()
             .WithOptions(options)
diff --git a/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureMessagesPageEnumerator.cs b/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureMessagesPageEnumerator.cs
index 6f2150dbb..46486b06b 100644
--- a/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureMessagesPageEnumerator.cs
+++ b/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureMessagesPageEnumerator.cs
@@ -1,8 +1,6 @@
 using System.ClientModel;
 using System.ClientModel.Primitives;
 
-#nullable enable
-
 namespace Azure.AI.OpenAI.Assistants;
 
 internal partial class AzureMessagesPageEnumerator : MessagesPageEnumerator
diff --git a/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureRunStepsPageEnumerator.cs b/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureRunStepsPageEnumerator.cs
index 633aa3d6e..9d66fbc3a 100644
--- a/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureRunStepsPageEnumerator.cs
+++ b/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureRunStepsPageEnumerator.cs
@@ -1,8 +1,6 @@
 using System.ClientModel;
 using System.ClientModel.Primitives;
 
-#nullable enable
-
 namespace Azure.AI.OpenAI.Assistants;
 
 internal partial class AzureRunStepsPageEnumerator : RunStepsPageEnumerator
@@ -14,7 +12,7 @@ public AzureRunStepsPageEnumerator(
         ClientPipeline pipeline,
         Uri endpoint,
         string threadId, string runId,
-        int? limit, string? order, string? after, string? before,
+        int? limit, string order, string after, string before,
         string apiVersion,
         RequestOptions options)
         : base(pipeline, endpoint, threadId, runId, limit, order, after, before, options)
@@ -23,7 +21,7 @@ public AzureRunStepsPageEnumerator(
         _apiVersion = apiVersion;
     }
 
-    internal override async Task<ClientResult> GetRunStepsAsync(string threadId, string runId, int? limit, string? order, string? after, string? before, RequestOptions? options)
+    internal override async Task<ClientResult> GetRunStepsAsync(string threadId, string runId, int? limit, string order, string after, string before, RequestOptions options)
     {
         Argument.AssertNotNullOrEmpty(threadId, nameof(threadId));
         Argument.AssertNotNullOrEmpty(runId, nameof(runId));
@@ -32,7 +30,7 @@ internal override async Task<ClientResult> GetRunStepsAsync(string threadId, str
         return ClientResult.FromResponse(await Pipeline.ProcessMessageAsync(message, options).ConfigureAwait(false));
     }
 
-    internal override ClientResult GetRunSteps(string threadId, string runId, int? limit, string? order, string? after, string? before, RequestOptions? options)
+    internal override ClientResult GetRunSteps(string threadId, string runId, int? limit, string order, string after, string before, RequestOptions options)
     {
         Argument.AssertNotNullOrEmpty(threadId, nameof(threadId));
         Argument.AssertNotNullOrEmpty(runId, nameof(runId));
diff --git a/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureRunsPageEnumerator.cs b/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureRunsPageEnumerator.cs
index 2a180d2f9..0b394354a 100644
--- a/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureRunsPageEnumerator.cs
+++ b/.dotnet.azure/src/Custom/Assistants/Internal/Pagination/AzureRunsPageEnumerator.cs
@@ -1,8 +1,6 @@
 using System.ClientModel;
 using System.ClientModel.Primitives;
 
-#nullable enable
-
 namespace Azure.AI.OpenAI.Assistants;
 
 internal partial class AzureRunsPageEnumerator : RunsPageEnumerator
diff --git a/.dotnet.azure/src/Custom/VectorStores/Internal/Pagination/AzureVectorStoreFileBatchesPageEnumerator.cs b/.dotnet.azure/src/Custom/VectorStores/Internal/Pagination/AzureVectorStoreFileBatchesPageEnumerator.cs
index d2505c8ab..bfb2bf07c 100644
--- a/.dotnet.azure/src/Custom/VectorStores/Internal/Pagination/AzureVectorStoreFileBatchesPageEnumerator.cs
+++ b/.dotnet.azure/src/Custom/VectorStores/Internal/Pagination/AzureVectorStoreFileBatchesPageEnumerator.cs
@@ -1,8 +1,6 @@
 using System.ClientModel;
 using System.ClientModel.Primitives;
 
-#nullable enable
-
 namespace Azure.AI.OpenAI.VectorStores;
 
 internal partial class AzureVectorStoreFileBatchesPageEnumerator : VectorStoreFileBatchesPageEnumerator
@@ -13,7 +11,7 @@ internal partial class AzureVectorStoreFileBatchesPageEnumerator : VectorStoreFi
     public AzureVectorStoreFileBatchesPageEnumerator(
         ClientPipeline pipeline,
         Uri endpoint,
-        string vectorStoreId, string batchId, int? limit, string? order, string? after, string? before, string? filter,
+        string vectorStoreId, string batchId, int? limit, string order, string after, string before, string filter,
         string apiVersion,
         RequestOptions options)
         : base(pipeline, endpoint, vectorStoreId, batchId, limit, order, after, before, filter, options)
@@ -22,7 +20,7 @@ public AzureVectorStoreFileBatchesPageEnumerator(
         _apiVersion = apiVersion;
     }
 
-    internal override async Task<ClientResult> GetFileAssociationsAsync(string vectorStoreId, string batchId, int? limit, string? order, string? after, string? before, string? filter, RequestOptions options)
+    internal override async Task<ClientResult> GetFileAssociationsAsync(string vectorStoreId, string batchId, int? limit, string order, string after, string before, string filter, RequestOptions options)
     {
         Argument.AssertNotNullOrEmpty(vectorStoreId, nameof(vectorStoreId));
         Argument.AssertNotNullOrEmpty(batchId, nameof(batchId));
@@ -31,7 +29,7 @@ internal override async Task<ClientResult> GetFileAssociationsAsync(string vecto
         return ClientResult.FromResponse(await Pipeline.ProcessMessageAsync(message, options).ConfigureAwait(false));
     }
 
-    internal override ClientResult GetFileAssociations(string vectorStoreId, string batchId, int? limit, string? order, string? after, string? before, string? filter, RequestOptions options)
+    internal override ClientResult GetFileAssociations(string vectorStoreId, string batchId, int? limit, string order, string after, string before, string filter, RequestOptions options)
     {
         Argument.AssertNotNullOrEmpty(vectorStoreId, nameof(vectorStoreId));
         Argument.AssertNotNullOrEmpty(batchId, nameof(batchId));
diff --git a/.dotnet.azure/src/Custom/VectorStores/Internal/Pagination/AzureVectorStoreFilesPageEnumerator.cs b/.dotnet.azure/src/Custom/VectorStores/Internal/Pagination/AzureVectorStoreFilesPageEnumerator.cs
index 208ae233d..5cf8b09ff 100644
--- a/.dotnet.azure/src/Custom/VectorStores/Internal/Pagination/AzureVectorStoreFilesPageEnumerator.cs
+++ b/.dotnet.azure/src/Custom/VectorStores/Internal/Pagination/AzureVectorStoreFilesPageEnumerator.cs
@@ -1,8 +1,6 @@
 using System.ClientModel;
 using System.ClientModel.Primitives;
 
-#nullable enable
-
 namespace Azure.AI.OpenAI.VectorStores;
 
 internal partial class AzureVectorStoreFilesPageEnumerator : VectorStoreFilesPageEnumerator
@@ -14,7 +12,7 @@ public AzureVectorStoreFilesPageEnumerator(
         ClientPipeline pipeline,
         Uri endpoint,
         string vectorStoreId, 
-        int? limit, string? order, string? after, string? before, string? filter,
+        int? limit, string order, string after, string before, string filter,
         string apiVersion,
         RequestOptions options)
         : base(pipeline, endpoint, vectorStoreId, limit, order, after, before, filter, options)
@@ -23,7 +21,7 @@ public AzureVectorStoreFilesPageEnumerator(
         _apiVersion = apiVersion;
     }
 
-    internal override async Task<ClientResult> GetFileAssociationsAsync(string vectorStoreId, int? limit, string? order, string? after, string? before, string? filter, RequestOptions options)
+    internal override async Task<ClientResult> GetFileAssociationsAsync(string vectorStoreId, int? limit, string order, string after, string before, string filter, RequestOptions options)
     {
         Argument.AssertNotNullOrEmpty(vectorStoreId, nameof(vectorStoreId));
 
@@ -31,7 +29,7 @@ internal override async Task<ClientResult> GetFileAssociationsAsync(string vecto
         return ClientResult.FromResponse(await Pipeline.ProcessMessageAsync(message, options).ConfigureAwait(false));
     }
 
-    internal override ClientResult GetFileAssociations(string vectorStoreId, int? limit, string? order, string? after, string? before, string? filter, RequestOptions options)
+    internal override ClientResult GetFileAssociations(string vectorStoreId, int? limit, string order, string after, string before, string filter, RequestOptions options)
     {
         Argument.AssertNotNullOrEmpty(vectorStoreId, nameof(vectorStoreId));
 
diff --git a/.dotnet.azure/src/Custom/VectorStores/Internal/Pagination/AzureVectorStoresPageEnumerator.cs b/.dotnet.azure/src/Custom/VectorStores/Internal/Pagination/AzureVectorStoresPageEnumerator.cs
index 23390e837..823045419 100644
--- a/.dotnet.azure/src/Custom/VectorStores/Internal/Pagination/AzureVectorStoresPageEnumerator.cs
+++ b/.dotnet.azure/src/Custom/VectorStores/Internal/Pagination/AzureVectorStoresPageEnumerator.cs
@@ -1,8 +1,6 @@
 using System.ClientModel;
 using System.ClientModel.Primitives;
 
-#nullable enable
-
 namespace Azure.AI.OpenAI.VectorStores;
 
 internal partial class AzureVectorStoresPageEnumerator : VectorStoresPageEnumerator
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 906f5dbd3..8d6463250 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -70,3 +70,18 @@ jobs:
           --api-key ${{ secrets.GITHUB_TOKEN }}
           --skip-duplicate
         working-directory: .dotnet
+
+  azure_build: # Development mirror only; validate AOAI compilation
+    runs-on: ubuntu-latest
+    steps:
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: 8.x
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Build
+        run: dotnet build
+        working-directory: .dotnet.azure
\ No newline at end of file