diff --git a/sdk/loadtestservice/azure-mgmt-loadtesting/_meta.json b/sdk/loadtestservice/azure-mgmt-loadtesting/_meta.json
index c28c68143e6e..9ab2feef4888 100644
--- a/sdk/loadtestservice/azure-mgmt-loadtesting/_meta.json
+++ b/sdk/loadtestservice/azure-mgmt-loadtesting/_meta.json
@@ -1,11 +1,11 @@
 {
-  "commit": "269c77bb83979703db9df46784effa70d9eed1e1",
+  "commit": "8f598b1378b5a712b6326576c788133aec514ed7",
   "repository_url": "https://github.com/Azure/azure-rest-api-specs",
   "autorest": "3.9.2",
   "use": [
-    "@autorest/python@6.2.16",
+    "@autorest/python@6.4.0",
     "@autorest/modelerfour@4.24.3"
   ],
-  "autorest_command": "autorest specification/loadtestservice/resource-manager/readme.md --generate-sample=True --include-x-ms-examples-original-file=True --python --python-sdks-folder=/home/vsts/work/1/azure-sdk-for-python/sdk --use=@autorest/python@6.2.16 --use=@autorest/modelerfour@4.24.3 --version=3.9.2 --version-tolerant=False",
+  "autorest_command": "autorest specification/loadtestservice/resource-manager/readme.md --generate-sample=True --include-x-ms-examples-original-file=True --python --python-sdks-folder=/mnt/vss/_work/1/s/azure-sdk-for-python/sdk --use=@autorest/python@6.4.0 --use=@autorest/modelerfour@4.24.3 --version=3.9.2 --version-tolerant=False",
   "readme": "specification/loadtestservice/resource-manager/readme.md"
 }
\ No newline at end of file
diff --git a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/_load_test_mgmt_client.py b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/_load_test_mgmt_client.py
index 1be9b7cb0c6a..f22295f127f5 100644
--- a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/_load_test_mgmt_client.py
+++ b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/_load_test_mgmt_client.py
@@ -91,5 +91,5 @@ def __enter__(self) -> "LoadTestMgmtClient":
         self._client.__enter__()
         return self
 
-    def __exit__(self, *exc_details) -> None:
+    def __exit__(self, *exc_details: Any) -> None:
         self._client.__exit__(*exc_details)
diff --git a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/_version.py b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/_version.py
index c47f66669f1b..e5754a47ce68 100644
--- a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/_version.py
+++ b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/_version.py
@@ -6,4 +6,4 @@
 # Changes may cause incorrect behavior and will be lost if the code is regenerated.
 # --------------------------------------------------------------------------
 
-VERSION = "1.0.0"
+VERSION = "1.0.0b1"
diff --git a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/aio/_load_test_mgmt_client.py b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/aio/_load_test_mgmt_client.py
index c623654c8669..a87227206b96 100644
--- a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/aio/_load_test_mgmt_client.py
+++ b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/aio/_load_test_mgmt_client.py
@@ -91,5 +91,5 @@ async def __aenter__(self) -> "LoadTestMgmtClient":
         await self._client.__aenter__()
         return self
 
-    async def __aexit__(self, *exc_details) -> None:
+    async def __aexit__(self, *exc_details: Any) -> None:
         await self._client.__aexit__(*exc_details)
diff --git a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/aio/operations/_load_tests_operations.py b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/aio/operations/_load_tests_operations.py
index 59e9fd82fd8d..a2978f4c170f 100644
--- a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/aio/operations/_load_tests_operations.py
+++ b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/aio/operations/_load_tests_operations.py
@@ -473,8 +473,8 @@ async def begin_create_or_update(
         :type resource_group_name: str
         :param load_test_name: Load Test name. Required.
         :type load_test_name: str
-        :param load_test_resource: LoadTest resource data. Is either a model type or a IO type.
-         Required.
+        :param load_test_resource: LoadTest resource data. Is either a LoadTestResource type or a IO
+         type. Required.
         :type load_test_resource: ~azure.mgmt.loadtesting.models.LoadTestResource or IO
         :keyword content_type: Body Parameter content-type. Known values are: 'application/json'.
          Default value is None.
@@ -710,8 +710,8 @@ async def begin_update(
         :type resource_group_name: str
         :param load_test_name: Load Test name. Required.
         :type load_test_name: str
-        :param load_test_resource_patch_request_body: LoadTest resource update data. Is either a model
-         type or a IO type. Required.
+        :param load_test_resource_patch_request_body: LoadTest resource update data. Is either a
+         LoadTestResourcePatchRequestBody type or a IO type. Required.
         :type load_test_resource_patch_request_body:
          ~azure.mgmt.loadtesting.models.LoadTestResourcePatchRequestBody or IO
         :keyword content_type: Body Parameter content-type. Known values are: 'application/json'.
diff --git a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/aio/operations/_quotas_operations.py b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/aio/operations/_quotas_operations.py
index ff7583191ab8..03f3dca22463 100644
--- a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/aio/operations/_quotas_operations.py
+++ b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/aio/operations/_quotas_operations.py
@@ -276,8 +276,8 @@ async def check_availability(
         :type location: str
         :param quota_bucket_name: Quota Bucket name. Required.
         :type quota_bucket_name: str
-        :param quota_bucket_request: Quota Bucket Request data. Is either a model type or a IO type.
-         Required.
+        :param quota_bucket_request: Quota Bucket Request data. Is either a QuotaBucketRequest type or
+         a IO type. Required.
         :type quota_bucket_request: ~azure.mgmt.loadtesting.models.QuotaBucketRequest or IO
         :keyword content_type: Body Parameter content-type. Known values are: 'application/json'.
          Default value is None.
diff --git a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/operations/_load_tests_operations.py b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/operations/_load_tests_operations.py
index 50aed759e6b5..4fc233e64f69 100644
--- a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/operations/_load_tests_operations.py
+++ b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/operations/_load_tests_operations.py
@@ -688,8 +688,8 @@ def begin_create_or_update(
         :type resource_group_name: str
         :param load_test_name: Load Test name. Required.
         :type load_test_name: str
-        :param load_test_resource: LoadTest resource data. Is either a model type or a IO type.
-         Required.
+        :param load_test_resource: LoadTest resource data. Is either a LoadTestResource type or a IO
+         type. Required.
         :type load_test_resource: ~azure.mgmt.loadtesting.models.LoadTestResource or IO
         :keyword content_type: Body Parameter content-type. Known values are: 'application/json'.
          Default value is None.
@@ -924,8 +924,8 @@ def begin_update(
         :type resource_group_name: str
         :param load_test_name: Load Test name. Required.
         :type load_test_name: str
-        :param load_test_resource_patch_request_body: LoadTest resource update data. Is either a model
-         type or a IO type. Required.
+        :param load_test_resource_patch_request_body: LoadTest resource update data. Is either a
+         LoadTestResourcePatchRequestBody type or a IO type. Required.
         :type load_test_resource_patch_request_body:
          ~azure.mgmt.loadtesting.models.LoadTestResourcePatchRequestBody or IO
         :keyword content_type: Body Parameter content-type. Known values are: 'application/json'.
diff --git a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/operations/_quotas_operations.py b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/operations/_quotas_operations.py
index 6bcf28a1df45..b2756c8ea3d3 100644
--- a/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/operations/_quotas_operations.py
+++ b/sdk/loadtestservice/azure-mgmt-loadtesting/azure/mgmt/loadtesting/operations/_quotas_operations.py
@@ -369,8 +369,8 @@ def check_availability(
         :type location: str
         :param quota_bucket_name: Quota Bucket name. Required.
         :type quota_bucket_name: str
-        :param quota_bucket_request: Quota Bucket Request data. Is either a model type or a IO type.
-         Required.
+        :param quota_bucket_request: Quota Bucket Request data. Is either a QuotaBucketRequest type or
+         a IO type. Required.
         :type quota_bucket_request: ~azure.mgmt.loadtesting.models.QuotaBucketRequest or IO
         :keyword content_type: Body Parameter content-type. Known values are: 'application/json'.
          Default value is None.