diff --git a/sdk/communication/azure-mgmt-communication/MANIFEST.in b/sdk/communication/azure-mgmt-communication/MANIFEST.in
index a3cb07df8765..3a9b6517412b 100644
--- a/sdk/communication/azure-mgmt-communication/MANIFEST.in
+++ b/sdk/communication/azure-mgmt-communication/MANIFEST.in
@@ -1,3 +1,4 @@
+include _meta.json
 recursive-include tests *.py *.yaml
 include *.md
 include azure/__init__.py
diff --git a/sdk/communication/azure-mgmt-communication/_meta.json b/sdk/communication/azure-mgmt-communication/_meta.json
new file mode 100644
index 000000000000..b45c869786c6
--- /dev/null
+++ b/sdk/communication/azure-mgmt-communication/_meta.json
@@ -0,0 +1,11 @@
+{
+  "autorest": "3.4.5",
+  "use": [
+    "@autorest/python@5.8.4",
+    "@autorest/modelerfour@4.19.2"
+  ],
+  "commit": "754938e4cb9416358b02dcc11f444adf14b3b7b6",
+  "repository_url": "https://github.com/Azure/azure-rest-api-specs",
+  "autorest_command": "autorest specification/communication/resource-manager/readme.md --multiapi --python --python-mode=update --python-sdks-folder=/home/vsts/work/1/s/azure-sdk-for-python/sdk --track2 --use=@autorest/python@5.8.4 --use=@autorest/modelerfour@4.19.2 --version=3.4.5",
+  "readme": "specification/communication/resource-manager/readme.md"
+}
\ No newline at end of file
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/_communication_service_management_client.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/_communication_service_management_client.py
index 98c6538d3be8..06f31ee1be6a 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/_communication_service_management_client.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/_communication_service_management_client.py
@@ -16,11 +16,11 @@
     from typing import Any, Optional
 
     from azure.core.credentials import TokenCredential
+    from azure.core.pipeline.transport import HttpRequest, HttpResponse
 
 from ._configuration import CommunicationServiceManagementClientConfiguration
 from .operations import Operations
 from .operations import CommunicationServiceOperations
-from .operations import OperationStatusesOperations
 from . import models
 
 
@@ -31,8 +31,6 @@ class CommunicationServiceManagementClient(object):
     :vartype operations: communication_service_management_client.operations.Operations
     :ivar communication_service: CommunicationServiceOperations operations
     :vartype communication_service: communication_service_management_client.operations.CommunicationServiceOperations
-    :ivar operation_statuses: OperationStatusesOperations operations
-    :vartype operation_statuses: communication_service_management_client.operations.OperationStatusesOperations
     :param credential: Credential needed for the client to connect to Azure.
     :type credential: ~azure.core.credentials.TokenCredential
     :param subscription_id: The ID of the target subscription.
@@ -63,8 +61,24 @@ def __init__(
             self._client, self._config, self._serialize, self._deserialize)
         self.communication_service = CommunicationServiceOperations(
             self._client, self._config, self._serialize, self._deserialize)
-        self.operation_statuses = OperationStatusesOperations(
-            self._client, self._config, self._serialize, self._deserialize)
+
+    def _send_request(self, http_request, **kwargs):
+        # type: (HttpRequest, Any) -> HttpResponse
+        """Runs the network request through the client's chained policies.
+
+        :param http_request: The network request you want to make. Required.
+        :type http_request: ~azure.core.pipeline.transport.HttpRequest
+        :keyword bool stream: Whether the response payload will be streamed. Defaults to True.
+        :return: The response of your network call. Does not do error handling on your response.
+        :rtype: ~azure.core.pipeline.transport.HttpResponse
+        """
+        path_format_arguments = {
+            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
+        }
+        http_request.url = self._client.format_url(http_request.url, **path_format_arguments)
+        stream = kwargs.pop("stream", True)
+        pipeline_response = self._client._pipeline.run(http_request, stream=stream, **kwargs)
+        return pipeline_response.http_response
 
     def close(self):
         # type: () -> None
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/_metadata.json b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/_metadata.json
index 26090e12d418..b778a7989a47 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/_metadata.json
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/_metadata.json
@@ -9,7 +9,9 @@
         "custom_base_url": null,
         "azure_arm": true,
         "has_lro_operations": true,
-        "client_side_validation": false
+        "client_side_validation": false,
+        "sync_imports": "{\"typing\": {\"azurecore\": {\"azure.core.credentials\": [\"TokenCredential\"]}}, \"regular\": {\"azurecore\": {\"azure.profiles\": [\"KnownProfiles\", \"ProfileDefinition\"], \"azure.profiles.multiapiclient\": [\"MultiApiClientMixin\"], \"msrest\": [\"Deserializer\", \"Serializer\"], \"azure.mgmt.core\": [\"ARMPipelineClient\"]}, \"local\": {\"._configuration\": [\"CommunicationServiceManagementClientConfiguration\"]}}, \"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Optional\"]}, \"azurecore\": {\"azure.core.pipeline.transport\": [\"HttpRequest\", \"HttpResponse\"]}}}",
+        "async_imports": "{\"typing\": {\"azurecore\": {\"azure.core.credentials_async\": [\"AsyncTokenCredential\"]}}, \"regular\": {\"azurecore\": {\"azure.profiles\": [\"KnownProfiles\", \"ProfileDefinition\"], \"azure.profiles.multiapiclient\": [\"MultiApiClientMixin\"], \"msrest\": [\"Deserializer\", \"Serializer\"], \"azure.mgmt.core\": [\"AsyncARMPipelineClient\"]}, \"local\": {\"._configuration\": [\"CommunicationServiceManagementClientConfiguration\"]}}, \"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Optional\"]}, \"azurecore\": {\"azure.core.pipeline.transport\": [\"AsyncHttpResponse\", \"HttpRequest\"]}}}"
     },
     "global_parameters": {
         "sync": {
@@ -28,13 +30,13 @@
         },
         "async": {
             "credential": {
-                "signature": "credential,  # type: \"AsyncTokenCredential\"",
+                "signature": "credential: \"AsyncTokenCredential\",",
                 "description": "Credential needed for the client to connect to Azure.",
                 "docstring_type": "~azure.core.credentials_async.AsyncTokenCredential",
                 "required": true
             },
             "subscription_id": {
-                "signature": "subscription_id,  # type: str",
+                "signature": "subscription_id: str,",
                 "description": "The ID of the target subscription.",
                 "docstring_type": "str",
                 "required": true
@@ -42,22 +44,61 @@
         },
         "constant": {
         },
-        "call": "credential, subscription_id"
+        "call": "credential, subscription_id",
+        "service_client_specific": {
+            "sync": {
+                "api_version": {
+                    "signature": "api_version=None, # type: Optional[str]",
+                    "description": "API version to use if no profile is provided, or if missing in profile.",
+                    "docstring_type": "str",
+                    "required": false
+                },
+                "base_url": {
+                    "signature": "base_url=None,  # type: Optional[str]",
+                    "description": "Service URL",
+                    "docstring_type": "str",
+                    "required": false
+                },
+                "profile": {
+                    "signature": "profile=KnownProfiles.default, # type: KnownProfiles",
+                    "description": "A profile definition, from KnownProfiles to dict.",
+                    "docstring_type": "azure.profiles.KnownProfiles",
+                    "required": false
+                }
+            },
+            "async": {
+                "api_version": {
+                    "signature": "api_version: Optional[str] = None,",
+                    "description": "API version to use if no profile is provided, or if missing in profile.",
+                    "docstring_type": "str",
+                    "required": false
+                },
+                "base_url": {
+                    "signature": "base_url: Optional[str] = None,",
+                    "description": "Service URL",
+                    "docstring_type": "str",
+                    "required": false
+                },
+                "profile": {
+                    "signature": "profile: KnownProfiles = KnownProfiles.default,",
+                    "description": "A profile definition, from KnownProfiles to dict.",
+                    "docstring_type": "azure.profiles.KnownProfiles",
+                    "required": false
+                }
+            }
+        }
     },
     "config": {
         "credential": true,
         "credential_scopes": ["https://management.azure.com/.default"],
         "credential_default_policy_type": "BearerTokenCredentialPolicy",
         "credential_default_policy_type_has_async_version": true,
-        "credential_key_header_name": null
+        "credential_key_header_name": null,
+        "sync_imports": "{\"regular\": {\"azurecore\": {\"azure.core.configuration\": [\"Configuration\"], \"azure.core.pipeline\": [\"policies\"], \"azure.mgmt.core.policies\": [\"ARMHttpLoggingPolicy\"]}, \"local\": {\"._version\": [\"VERSION\"]}}, \"conditional\": {\"stdlib\": {\"typing\": [\"Any\"]}}, \"typing\": {\"azurecore\": {\"azure.core.credentials\": [\"TokenCredential\"]}}}",
+        "async_imports": "{\"regular\": {\"azurecore\": {\"azure.core.configuration\": [\"Configuration\"], \"azure.core.pipeline\": [\"policies\"], \"azure.mgmt.core.policies\": [\"ARMHttpLoggingPolicy\"]}, \"local\": {\".._version\": [\"VERSION\"]}}, \"conditional\": {\"stdlib\": {\"typing\": [\"Any\"]}}, \"typing\": {\"azurecore\": {\"azure.core.credentials_async\": [\"AsyncTokenCredential\"]}}}"
     },
     "operation_groups": {
         "operations": "Operations",
-        "communication_service": "CommunicationServiceOperations",
-        "operation_statuses": "OperationStatusesOperations"
-    },
-    "operation_mixins": {
-    },
-    "sync_imports": "None",
-    "async_imports": "None"
+        "communication_service": "CommunicationServiceOperations"
+    }
 }
\ No newline at end of file
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/_version.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/_version.py
index 961c76eb77c1..c47f66669f1b 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/_version.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/_version.py
@@ -6,4 +6,4 @@
 # Changes may cause incorrect behavior and will be lost if the code is regenerated.
 # --------------------------------------------------------------------------
 
-VERSION = "1.0.1"
+VERSION = "1.0.0"
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/_communication_service_management_client.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/_communication_service_management_client.py
index daa027cf4da5..3b4aa5a4bc01 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/_communication_service_management_client.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/_communication_service_management_client.py
@@ -8,6 +8,7 @@
 
 from typing import Any, Optional, TYPE_CHECKING
 
+from azure.core.pipeline.transport import AsyncHttpResponse, HttpRequest
 from azure.mgmt.core import AsyncARMPipelineClient
 from msrest import Deserializer, Serializer
 
@@ -18,7 +19,6 @@
 from ._configuration import CommunicationServiceManagementClientConfiguration
 from .operations import Operations
 from .operations import CommunicationServiceOperations
-from .operations import OperationStatusesOperations
 from .. import models
 
 
@@ -29,8 +29,6 @@ class CommunicationServiceManagementClient(object):
     :vartype operations: communication_service_management_client.aio.operations.Operations
     :ivar communication_service: CommunicationServiceOperations operations
     :vartype communication_service: communication_service_management_client.aio.operations.CommunicationServiceOperations
-    :ivar operation_statuses: OperationStatusesOperations operations
-    :vartype operation_statuses: communication_service_management_client.aio.operations.OperationStatusesOperations
     :param credential: Credential needed for the client to connect to Azure.
     :type credential: ~azure.core.credentials_async.AsyncTokenCredential
     :param subscription_id: The ID of the target subscription.
@@ -60,8 +58,23 @@ def __init__(
             self._client, self._config, self._serialize, self._deserialize)
         self.communication_service = CommunicationServiceOperations(
             self._client, self._config, self._serialize, self._deserialize)
-        self.operation_statuses = OperationStatusesOperations(
-            self._client, self._config, self._serialize, self._deserialize)
+
+    async def _send_request(self, http_request: HttpRequest, **kwargs: Any) -> AsyncHttpResponse:
+        """Runs the network request through the client's chained policies.
+
+        :param http_request: The network request you want to make. Required.
+        :type http_request: ~azure.core.pipeline.transport.HttpRequest
+        :keyword bool stream: Whether the response payload will be streamed. Defaults to True.
+        :return: The response of your network call. Does not do error handling on your response.
+        :rtype: ~azure.core.pipeline.transport.AsyncHttpResponse
+        """
+        path_format_arguments = {
+            'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
+        }
+        http_request.url = self._client.format_url(http_request.url, **path_format_arguments)
+        stream = kwargs.pop("stream", True)
+        pipeline_response = await self._client._pipeline.run(http_request, stream=stream, **kwargs)
+        return pipeline_response.http_response
 
     async def close(self) -> None:
         await self._client.close()
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/operations/__init__.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/operations/__init__.py
index 0e6c216d6400..0a595e4791cd 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/operations/__init__.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/operations/__init__.py
@@ -8,10 +8,8 @@
 
 from ._operations import Operations
 from ._communication_service_operations import CommunicationServiceOperations
-from ._operation_statuses_operations import OperationStatusesOperations
 
 __all__ = [
     'Operations',
     'CommunicationServiceOperations',
-    'OperationStatusesOperations',
 ]
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/operations/_communication_service_operations.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/operations/_communication_service_operations.py
index 5abff16a6791..75f7bf37ae4f 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/operations/_communication_service_operations.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/operations/_communication_service_operations.py
@@ -46,7 +46,7 @@ def __init__(self, client, config, serializer, deserializer) -> None:
     async def check_name_availability(
         self,
         name_availability_parameters: Optional["_models.NameAvailabilityParameters"] = None,
-        **kwargs
+        **kwargs: Any
     ) -> "_models.NameAvailability":
         """Check Name Availability.
 
@@ -96,7 +96,7 @@ async def check_name_availability(
 
         if response.status_code not in [200]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         deserialized = self._deserialize('NameAvailability', pipeline_response)
@@ -112,7 +112,7 @@ async def link_notification_hub(
         resource_group_name: str,
         communication_service_name: str,
         link_notification_hub_parameters: Optional["_models.LinkNotificationHubParameters"] = None,
-        **kwargs
+        **kwargs: Any
     ) -> "_models.LinkedNotificationHub":
         """Link Notification Hub.
 
@@ -142,7 +142,7 @@ async def link_notification_hub(
         url = self.link_notification_hub.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -168,7 +168,7 @@ async def link_notification_hub(
 
         if response.status_code not in [200]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         deserialized = self._deserialize('LinkedNotificationHub', pipeline_response)
@@ -181,7 +181,7 @@ async def link_notification_hub(
 
     def list_by_subscription(
         self,
-        **kwargs
+        **kwargs: Any
     ) -> AsyncIterable["_models.CommunicationServiceResourceList"]:
         """List By Subscription.
 
@@ -237,7 +237,7 @@ async def get_next(next_link=None):
             response = pipeline_response.http_response
 
             if response.status_code not in [200]:
-                error = self._deserialize(_models.ErrorResponse, response)
+                error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
                 map_error(status_code=response.status_code, response=response, error_map=error_map)
                 raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
@@ -251,7 +251,7 @@ async def get_next(next_link=None):
     def list_by_resource_group(
         self,
         resource_group_name: str,
-        **kwargs
+        **kwargs: Any
     ) -> AsyncIterable["_models.CommunicationServiceResourceList"]:
         """List By Resource Group.
 
@@ -282,7 +282,7 @@ def prepare_request(next_link=None):
                 url = self.list_by_resource_group.metadata['url']  # type: ignore
                 path_format_arguments = {
                     'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-                    'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+                    'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
                 }
                 url = self._client.format_url(url, **path_format_arguments)
                 # Construct parameters
@@ -310,7 +310,7 @@ async def get_next(next_link=None):
             response = pipeline_response.http_response
 
             if response.status_code not in [200]:
-                error = self._deserialize(_models.ErrorResponse, response)
+                error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
                 map_error(status_code=response.status_code, response=response, error_map=error_map)
                 raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
@@ -326,7 +326,7 @@ async def update(
         resource_group_name: str,
         communication_service_name: str,
         parameters: Optional["_models.CommunicationServiceResource"] = None,
-        **kwargs
+        **kwargs: Any
     ) -> "_models.CommunicationServiceResource":
         """Update.
 
@@ -356,7 +356,7 @@ async def update(
         url = self.update.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -382,7 +382,7 @@ async def update(
 
         if response.status_code not in [200]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         deserialized = self._deserialize('CommunicationServiceResource', pipeline_response)
@@ -397,7 +397,7 @@ async def get(
         self,
         resource_group_name: str,
         communication_service_name: str,
-        **kwargs
+        **kwargs: Any
     ) -> "_models.CommunicationServiceResource":
         """Get.
 
@@ -424,7 +424,7 @@ async def get(
         url = self.get.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -443,7 +443,7 @@ async def get(
 
         if response.status_code not in [200]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         deserialized = self._deserialize('CommunicationServiceResource', pipeline_response)
@@ -459,7 +459,7 @@ async def _create_or_update_initial(
         resource_group_name: str,
         communication_service_name: str,
         parameters: Optional["_models.CommunicationServiceResource"] = None,
-        **kwargs
+        **kwargs: Any
     ) -> "_models.CommunicationServiceResource":
         cls = kwargs.pop('cls', None)  # type: ClsType["_models.CommunicationServiceResource"]
         error_map = {
@@ -474,7 +474,7 @@ async def _create_or_update_initial(
         url = self._create_or_update_initial.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -500,7 +500,7 @@ async def _create_or_update_initial(
 
         if response.status_code not in [200, 201]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         response_headers = {}
@@ -522,7 +522,7 @@ async def begin_create_or_update(
         resource_group_name: str,
         communication_service_name: str,
         parameters: Optional["_models.CommunicationServiceResource"] = None,
-        **kwargs
+        **kwargs: Any
     ) -> AsyncLROPoller["_models.CommunicationServiceResource"]:
         """Create Or Update.
 
@@ -536,8 +536,8 @@ async def begin_create_or_update(
         :type parameters: ~communication_service_management_client.models.CommunicationServiceResource
         :keyword callable cls: A custom type or function that will be passed the direct response
         :keyword str continuation_token: A continuation token to restart a poller from a saved state.
-        :keyword polling: True for ARMPolling, False for no polling, or a
-         polling object for personal polling strategy
+        :keyword polling: By default, your polling method will be AsyncARMPolling.
+         Pass in False for this operation to not poll, or pass in your own initialized polling object for a personal polling strategy.
         :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
         :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
         :return: An instance of AsyncLROPoller that returns either CommunicationServiceResource or the result of cls(response)
@@ -572,7 +572,7 @@ def get_long_running_output(pipeline_response):
 
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
 
@@ -594,7 +594,7 @@ async def _delete_initial(
         self,
         resource_group_name: str,
         communication_service_name: str,
-        **kwargs
+        **kwargs: Any
     ) -> None:
         cls = kwargs.pop('cls', None)  # type: ClsType[None]
         error_map = {
@@ -608,7 +608,7 @@ async def _delete_initial(
         url = self._delete_initial.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -627,7 +627,7 @@ async def _delete_initial(
 
         if response.status_code not in [200, 202, 204]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         response_headers = {}
@@ -643,7 +643,7 @@ async def begin_delete(
         self,
         resource_group_name: str,
         communication_service_name: str,
-        **kwargs
+        **kwargs: Any
     ) -> AsyncLROPoller[None]:
         """Delete.
 
@@ -655,8 +655,8 @@ async def begin_delete(
         :type communication_service_name: str
         :keyword callable cls: A custom type or function that will be passed the direct response
         :keyword str continuation_token: A continuation token to restart a poller from a saved state.
-        :keyword polling: True for ARMPolling, False for no polling, or a
-         polling object for personal polling strategy
+        :keyword polling: By default, your polling method will be AsyncARMPolling.
+         Pass in False for this operation to not poll, or pass in your own initialized polling object for a personal polling strategy.
         :paramtype polling: bool or ~azure.core.polling.AsyncPollingMethod
         :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
         :return: An instance of AsyncLROPoller that returns either None or the result of cls(response)
@@ -687,7 +687,7 @@ def get_long_running_output(pipeline_response):
 
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
 
@@ -709,7 +709,7 @@ async def list_keys(
         self,
         resource_group_name: str,
         communication_service_name: str,
-        **kwargs
+        **kwargs: Any
     ) -> "_models.CommunicationServiceKeys":
         """List Keys.
 
@@ -736,7 +736,7 @@ async def list_keys(
         url = self.list_keys.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -755,7 +755,7 @@ async def list_keys(
 
         if response.status_code not in [200]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         deserialized = self._deserialize('CommunicationServiceKeys', pipeline_response)
@@ -771,7 +771,7 @@ async def regenerate_key(
         resource_group_name: str,
         communication_service_name: str,
         parameters: "_models.RegenerateKeyParameters",
-        **kwargs
+        **kwargs: Any
     ) -> "_models.CommunicationServiceKeys":
         """Regenerate Key.
 
@@ -802,7 +802,7 @@ async def regenerate_key(
         url = self.regenerate_key.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -825,7 +825,7 @@ async def regenerate_key(
 
         if response.status_code not in [200]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         deserialized = self._deserialize('CommunicationServiceKeys', pipeline_response)
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/operations/_operations.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/operations/_operations.py
index aaf2bb39694d..955fa730471a 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/operations/_operations.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/aio/operations/_operations.py
@@ -43,7 +43,7 @@ def __init__(self, client, config, serializer, deserializer) -> None:
 
     def list(
         self,
-        **kwargs
+        **kwargs: Any
     ) -> AsyncIterable["_models.OperationListResult"]:
         """List Operations.
 
@@ -95,7 +95,7 @@ async def get_next(next_link=None):
             response = pipeline_response.http_response
 
             if response.status_code not in [200]:
-                error = self._deserialize(_models.ErrorResponse, response)
+                error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
                 map_error(status_code=response.status_code, response=response, error_map=error_map)
                 raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/__init__.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/__init__.py
index 8485e0905ace..87bc0dedc26d 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/__init__.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/__init__.py
@@ -21,7 +21,6 @@
     from ._models_py3 import Operation
     from ._models_py3 import OperationDisplay
     from ._models_py3 import OperationListResult
-    from ._models_py3 import OperationStatus
     from ._models_py3 import RegenerateKeyParameters
     from ._models_py3 import Resource
     from ._models_py3 import SystemData
@@ -41,7 +40,6 @@
     from ._models import Operation  # type: ignore
     from ._models import OperationDisplay  # type: ignore
     from ._models import OperationListResult  # type: ignore
-    from ._models import OperationStatus  # type: ignore
     from ._models import RegenerateKeyParameters  # type: ignore
     from ._models import Resource  # type: ignore
     from ._models import SystemData  # type: ignore
@@ -53,7 +51,6 @@
     KeyType,
     Origin,
     ProvisioningState,
-    Status,
 )
 
 __all__ = [
@@ -71,7 +68,6 @@
     'Operation',
     'OperationDisplay',
     'OperationListResult',
-    'OperationStatus',
     'RegenerateKeyParameters',
     'Resource',
     'SystemData',
@@ -81,5 +77,4 @@
     'KeyType',
     'Origin',
     'ProvisioningState',
-    'Status',
 ]
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/_communication_service_management_client_enums.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/_communication_service_management_client_enums.py
index f970f772a600..6cfd385f1f33 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/_communication_service_management_client_enums.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/_communication_service_management_client_enums.py
@@ -70,14 +70,3 @@ class ProvisioningState(with_metaclass(_CaseInsensitiveEnumMeta, str, Enum)):
     UPDATING = "Updating"
     DELETING = "Deleting"
     MOVING = "Moving"
-
-class Status(with_metaclass(_CaseInsensitiveEnumMeta, str, Enum)):
-    """Provisioning state of the resource.
-    """
-
-    SUCCEEDED = "Succeeded"
-    FAILED = "Failed"
-    CANCELED = "Canceled"
-    CREATING = "Creating"
-    DELETING = "Deleting"
-    MOVING = "Moving"
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/_models.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/_models.py
index 18183f315372..4102e63e006d 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/_models.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/_models.py
@@ -255,7 +255,7 @@ class ErrorAdditionalInfo(msrest.serialization.Model):
     :ivar type: The additional info type.
     :vartype type: str
     :ivar info: The additional info.
-    :vartype info: object
+    :vartype info: any
     """
 
     _validation = {
@@ -426,8 +426,8 @@ class NameAvailabilityParameters(msrest.serialization.Model):
     :param type: Required. The resource type. Should be always
      "Microsoft.Communication/CommunicationServices".
     :type type: str
-    :param name: Required. The CommunicationService name to validate. e.g."my-CommunicationService-
-     name-here".
+    :param name: Required. The CommunicationService name to validate.
+     e.g."my-CommunicationService-name-here".
     :type name: str
     """
 
@@ -458,8 +458,8 @@ class Operation(msrest.serialization.Model):
     :ivar name: The name of the operation, as per Resource-Based Access Control (RBAC). Examples:
      "Microsoft.Compute/virtualMachines/write", "Microsoft.Compute/virtualMachines/capture/action".
     :vartype name: str
-    :ivar is_data_action: Whether the operation applies to data-plane. This is "true" for data-
-     plane operations and "false" for ARM/control-plane operations.
+    :ivar is_data_action: Whether the operation applies to data-plane. This is "true" for
+     data-plane operations and "false" for ARM/control-plane operations.
     :vartype is_data_action: bool
     :param display: Localized display information for this particular operation.
     :type display: ~communication_service_management_client.models.OperationDisplay
@@ -573,61 +573,11 @@ def __init__(
         self.next_link = None
 
 
-class OperationStatus(msrest.serialization.Model):
-    """The current status of an async operation.
-
-    Variables are only populated by the server, and will be ignored when sending a request.
-
-    :ivar id: Fully qualified ID for the operation status.
-    :vartype id: str
-    :ivar status: Provisioning state of the resource. Possible values include: "Succeeded",
-     "Failed", "Canceled", "Creating", "Deleting", "Moving".
-    :vartype status: str or ~communication_service_management_client.models.Status
-    :ivar start_time: The start time of the operation.
-    :vartype start_time: ~datetime.datetime
-    :ivar end_time: The end time of the operation.
-    :vartype end_time: ~datetime.datetime
-    :ivar percent_complete: Percent of the operation that is complete.
-    :vartype percent_complete: float
-    :param error: The error object.
-    :type error: ~communication_service_management_client.models.ErrorDetail
-    """
-
-    _validation = {
-        'id': {'readonly': True},
-        'status': {'readonly': True},
-        'start_time': {'readonly': True},
-        'end_time': {'readonly': True},
-        'percent_complete': {'readonly': True, 'maximum': 100, 'minimum': 0},
-    }
-
-    _attribute_map = {
-        'id': {'key': 'id', 'type': 'str'},
-        'status': {'key': 'status', 'type': 'str'},
-        'start_time': {'key': 'startTime', 'type': 'iso-8601'},
-        'end_time': {'key': 'endTime', 'type': 'iso-8601'},
-        'percent_complete': {'key': 'percentComplete', 'type': 'float'},
-        'error': {'key': 'error.error', 'type': 'ErrorDetail'},
-    }
-
-    def __init__(
-        self,
-        **kwargs
-    ):
-        super(OperationStatus, self).__init__(**kwargs)
-        self.id = None
-        self.status = None
-        self.start_time = None
-        self.end_time = None
-        self.percent_complete = None
-        self.error = kwargs.get('error', None)
-
-
 class RegenerateKeyParameters(msrest.serialization.Model):
     """Parameters describes the request to regenerate access keys.
 
-    :param key_type: The keyType to regenerate. Must be either 'primary' or 'secondary'(case-
-     insensitive). Possible values include: "Primary", "Secondary".
+    :param key_type: The keyType to regenerate. Must be either 'primary' or
+     'secondary'(case-insensitive). Possible values include: "Primary", "Secondary".
     :type key_type: str or ~communication_service_management_client.models.KeyType
     """
 
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/_models_py3.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/_models_py3.py
index 00376005cd4e..f6f3d3df6f2e 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/_models_py3.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/models/_models_py3.py
@@ -276,7 +276,7 @@ class ErrorAdditionalInfo(msrest.serialization.Model):
     :ivar type: The additional info type.
     :vartype type: str
     :ivar info: The additional info.
-    :vartype info: object
+    :vartype info: any
     """
 
     _validation = {
@@ -458,8 +458,8 @@ class NameAvailabilityParameters(msrest.serialization.Model):
     :param type: Required. The resource type. Should be always
      "Microsoft.Communication/CommunicationServices".
     :type type: str
-    :param name: Required. The CommunicationService name to validate. e.g."my-CommunicationService-
-     name-here".
+    :param name: Required. The CommunicationService name to validate.
+     e.g."my-CommunicationService-name-here".
     :type name: str
     """
 
@@ -493,8 +493,8 @@ class Operation(msrest.serialization.Model):
     :ivar name: The name of the operation, as per Resource-Based Access Control (RBAC). Examples:
      "Microsoft.Compute/virtualMachines/write", "Microsoft.Compute/virtualMachines/capture/action".
     :vartype name: str
-    :ivar is_data_action: Whether the operation applies to data-plane. This is "true" for data-
-     plane operations and "false" for ARM/control-plane operations.
+    :ivar is_data_action: Whether the operation applies to data-plane. This is "true" for
+     data-plane operations and "false" for ARM/control-plane operations.
     :vartype is_data_action: bool
     :param display: Localized display information for this particular operation.
     :type display: ~communication_service_management_client.models.OperationDisplay
@@ -610,63 +610,11 @@ def __init__(
         self.next_link = None
 
 
-class OperationStatus(msrest.serialization.Model):
-    """The current status of an async operation.
-
-    Variables are only populated by the server, and will be ignored when sending a request.
-
-    :ivar id: Fully qualified ID for the operation status.
-    :vartype id: str
-    :ivar status: Provisioning state of the resource. Possible values include: "Succeeded",
-     "Failed", "Canceled", "Creating", "Deleting", "Moving".
-    :vartype status: str or ~communication_service_management_client.models.Status
-    :ivar start_time: The start time of the operation.
-    :vartype start_time: ~datetime.datetime
-    :ivar end_time: The end time of the operation.
-    :vartype end_time: ~datetime.datetime
-    :ivar percent_complete: Percent of the operation that is complete.
-    :vartype percent_complete: float
-    :param error: The error object.
-    :type error: ~communication_service_management_client.models.ErrorDetail
-    """
-
-    _validation = {
-        'id': {'readonly': True},
-        'status': {'readonly': True},
-        'start_time': {'readonly': True},
-        'end_time': {'readonly': True},
-        'percent_complete': {'readonly': True, 'maximum': 100, 'minimum': 0},
-    }
-
-    _attribute_map = {
-        'id': {'key': 'id', 'type': 'str'},
-        'status': {'key': 'status', 'type': 'str'},
-        'start_time': {'key': 'startTime', 'type': 'iso-8601'},
-        'end_time': {'key': 'endTime', 'type': 'iso-8601'},
-        'percent_complete': {'key': 'percentComplete', 'type': 'float'},
-        'error': {'key': 'error.error', 'type': 'ErrorDetail'},
-    }
-
-    def __init__(
-        self,
-        *,
-        error: Optional["ErrorDetail"] = None,
-        **kwargs
-    ):
-        super(OperationStatus, self).__init__(**kwargs)
-        self.id = None
-        self.status = None
-        self.start_time = None
-        self.end_time = None
-        self.percent_complete = None
-        self.error = error
-
-
 class RegenerateKeyParameters(msrest.serialization.Model):
     """Parameters describes the request to regenerate access keys.
 
-    :param key_type: The keyType to regenerate. Must be either 'primary' or 'secondary'(case-
-     insensitive). Possible values include: "Primary", "Secondary".
+    :param key_type: The keyType to regenerate. Must be either 'primary' or
+     'secondary'(case-insensitive). Possible values include: "Primary", "Secondary".
     :type key_type: str or ~communication_service_management_client.models.KeyType
     """
 
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/operations/__init__.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/operations/__init__.py
index 0e6c216d6400..0a595e4791cd 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/operations/__init__.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/operations/__init__.py
@@ -8,10 +8,8 @@
 
 from ._operations import Operations
 from ._communication_service_operations import CommunicationServiceOperations
-from ._operation_statuses_operations import OperationStatusesOperations
 
 __all__ = [
     'Operations',
     'CommunicationServiceOperations',
-    'OperationStatusesOperations',
 ]
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/operations/_communication_service_operations.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/operations/_communication_service_operations.py
index 7137e3adce1a..93cbea9b4319 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/operations/_communication_service_operations.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/operations/_communication_service_operations.py
@@ -101,7 +101,7 @@ def check_name_availability(
 
         if response.status_code not in [200]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         deserialized = self._deserialize('NameAvailability', pipeline_response)
@@ -148,7 +148,7 @@ def link_notification_hub(
         url = self.link_notification_hub.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -174,7 +174,7 @@ def link_notification_hub(
 
         if response.status_code not in [200]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         deserialized = self._deserialize('LinkedNotificationHub', pipeline_response)
@@ -244,7 +244,7 @@ def get_next(next_link=None):
             response = pipeline_response.http_response
 
             if response.status_code not in [200]:
-                error = self._deserialize(_models.ErrorResponse, response)
+                error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
                 map_error(status_code=response.status_code, response=response, error_map=error_map)
                 raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
@@ -290,7 +290,7 @@ def prepare_request(next_link=None):
                 url = self.list_by_resource_group.metadata['url']  # type: ignore
                 path_format_arguments = {
                     'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-                    'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+                    'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
                 }
                 url = self._client.format_url(url, **path_format_arguments)
                 # Construct parameters
@@ -318,7 +318,7 @@ def get_next(next_link=None):
             response = pipeline_response.http_response
 
             if response.status_code not in [200]:
-                error = self._deserialize(_models.ErrorResponse, response)
+                error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
                 map_error(status_code=response.status_code, response=response, error_map=error_map)
                 raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
@@ -365,7 +365,7 @@ def update(
         url = self.update.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -391,7 +391,7 @@ def update(
 
         if response.status_code not in [200]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         deserialized = self._deserialize('CommunicationServiceResource', pipeline_response)
@@ -434,7 +434,7 @@ def get(
         url = self.get.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -453,7 +453,7 @@ def get(
 
         if response.status_code not in [200]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         deserialized = self._deserialize('CommunicationServiceResource', pipeline_response)
@@ -485,7 +485,7 @@ def _create_or_update_initial(
         url = self._create_or_update_initial.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -511,7 +511,7 @@ def _create_or_update_initial(
 
         if response.status_code not in [200, 201]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         response_headers = {}
@@ -548,8 +548,8 @@ def begin_create_or_update(
         :type parameters: ~communication_service_management_client.models.CommunicationServiceResource
         :keyword callable cls: A custom type or function that will be passed the direct response
         :keyword str continuation_token: A continuation token to restart a poller from a saved state.
-        :keyword polling: True for ARMPolling, False for no polling, or a
-         polling object for personal polling strategy
+        :keyword polling: By default, your polling method will be ARMPolling.
+         Pass in False for this operation to not poll, or pass in your own initialized polling object for a personal polling strategy.
         :paramtype polling: bool or ~azure.core.polling.PollingMethod
         :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
         :return: An instance of LROPoller that returns either CommunicationServiceResource or the result of cls(response)
@@ -584,7 +584,7 @@ def get_long_running_output(pipeline_response):
 
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
 
@@ -621,7 +621,7 @@ def _delete_initial(
         url = self._delete_initial.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -640,7 +640,7 @@ def _delete_initial(
 
         if response.status_code not in [200, 202, 204]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         response_headers = {}
@@ -669,8 +669,8 @@ def begin_delete(
         :type communication_service_name: str
         :keyword callable cls: A custom type or function that will be passed the direct response
         :keyword str continuation_token: A continuation token to restart a poller from a saved state.
-        :keyword polling: True for ARMPolling, False for no polling, or a
-         polling object for personal polling strategy
+        :keyword polling: By default, your polling method will be ARMPolling.
+         Pass in False for this operation to not poll, or pass in your own initialized polling object for a personal polling strategy.
         :paramtype polling: bool or ~azure.core.polling.PollingMethod
         :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
         :return: An instance of LROPoller that returns either None or the result of cls(response)
@@ -701,7 +701,7 @@ def get_long_running_output(pipeline_response):
 
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
 
@@ -751,7 +751,7 @@ def list_keys(
         url = self.list_keys.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -770,7 +770,7 @@ def list_keys(
 
         if response.status_code not in [200]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         deserialized = self._deserialize('CommunicationServiceKeys', pipeline_response)
@@ -818,7 +818,7 @@ def regenerate_key(
         url = self.regenerate_key.metadata['url']  # type: ignore
         path_format_arguments = {
             'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
-            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1, pattern=r'^[-\w\._\(\)]+$'),
+            'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
             'communicationServiceName': self._serialize.url("communication_service_name", communication_service_name, 'str', max_length=63, min_length=1, pattern=r'^[-\w]+$'),
         }
         url = self._client.format_url(url, **path_format_arguments)
@@ -841,7 +841,7 @@ def regenerate_key(
 
         if response.status_code not in [200]:
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = self._deserialize(_models.ErrorResponse, response)
+            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         deserialized = self._deserialize('CommunicationServiceKeys', pipeline_response)
diff --git a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/operations/_operations.py b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/operations/_operations.py
index a8d25311b423..6833ff28d223 100644
--- a/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/operations/_operations.py
+++ b/sdk/communication/azure-mgmt-communication/azure/mgmt/communication/operations/_operations.py
@@ -100,7 +100,7 @@ def get_next(next_link=None):
             response = pipeline_response.http_response
 
             if response.status_code not in [200]:
-                error = self._deserialize(_models.ErrorResponse, response)
+                error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
                 map_error(status_code=response.status_code, response=response, error_map=error_map)
                 raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)