diff --git a/google/cloud/servicedirectory_v1/services/lookup_service/transports/__init__.py b/google/cloud/servicedirectory_v1/services/lookup_service/transports/__init__.py
index 73a8094b..7f438daf 100644
--- a/google/cloud/servicedirectory_v1/services/lookup_service/transports/__init__.py
+++ b/google/cloud/servicedirectory_v1/services/lookup_service/transports/__init__.py
@@ -28,7 +28,6 @@
 _transport_registry["grpc"] = LookupServiceGrpcTransport
 _transport_registry["grpc_asyncio"] = LookupServiceGrpcAsyncIOTransport
 
-
 __all__ = (
     "LookupServiceTransport",
     "LookupServiceGrpcTransport",
diff --git a/google/cloud/servicedirectory_v1/services/lookup_service/transports/grpc.py b/google/cloud/servicedirectory_v1/services/lookup_service/transports/grpc.py
index b6e133a2..ffe1b95a 100644
--- a/google/cloud/servicedirectory_v1/services/lookup_service/transports/grpc.py
+++ b/google/cloud/servicedirectory_v1/services/lookup_service/transports/grpc.py
@@ -146,6 +146,10 @@ def __init__(
                 ssl_credentials=ssl_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             self._ssl_channel_credentials = ssl_credentials
         else:
@@ -164,6 +168,10 @@ def __init__(
                 ssl_credentials=ssl_channel_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
 
         self._stubs = {}  # type: Dict[str, Callable]
@@ -190,7 +198,7 @@ def create_channel(
     ) -> grpc.Channel:
         """Create and return a gRPC channel object.
         Args:
-            address (Optionsl[str]): The host for the channel to use.
+            address (Optional[str]): The host for the channel to use.
             credentials (Optional[~.Credentials]): The
                 authorization credentials to attach to requests. These
                 credentials identify this application to the service. If
diff --git a/google/cloud/servicedirectory_v1/services/lookup_service/transports/grpc_asyncio.py b/google/cloud/servicedirectory_v1/services/lookup_service/transports/grpc_asyncio.py
index 804a54bf..62f7acd6 100644
--- a/google/cloud/servicedirectory_v1/services/lookup_service/transports/grpc_asyncio.py
+++ b/google/cloud/servicedirectory_v1/services/lookup_service/transports/grpc_asyncio.py
@@ -191,6 +191,10 @@ def __init__(
                 ssl_credentials=ssl_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             self._ssl_channel_credentials = ssl_credentials
         else:
@@ -209,6 +213,10 @@ def __init__(
                 ssl_credentials=ssl_channel_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
 
         # Run the base constructor.
diff --git a/google/cloud/servicedirectory_v1/services/registration_service/transports/__init__.py b/google/cloud/servicedirectory_v1/services/registration_service/transports/__init__.py
index 1d3a2a28..f98d90f9 100644
--- a/google/cloud/servicedirectory_v1/services/registration_service/transports/__init__.py
+++ b/google/cloud/servicedirectory_v1/services/registration_service/transports/__init__.py
@@ -30,7 +30,6 @@
 _transport_registry["grpc"] = RegistrationServiceGrpcTransport
 _transport_registry["grpc_asyncio"] = RegistrationServiceGrpcAsyncIOTransport
 
-
 __all__ = (
     "RegistrationServiceTransport",
     "RegistrationServiceGrpcTransport",
diff --git a/google/cloud/servicedirectory_v1/services/registration_service/transports/grpc.py b/google/cloud/servicedirectory_v1/services/registration_service/transports/grpc.py
index a4f88015..fb2ade79 100644
--- a/google/cloud/servicedirectory_v1/services/registration_service/transports/grpc.py
+++ b/google/cloud/servicedirectory_v1/services/registration_service/transports/grpc.py
@@ -169,6 +169,10 @@ def __init__(
                 ssl_credentials=ssl_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             self._ssl_channel_credentials = ssl_credentials
         else:
@@ -187,6 +191,10 @@ def __init__(
                 ssl_credentials=ssl_channel_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
 
         self._stubs = {}  # type: Dict[str, Callable]
@@ -213,7 +221,7 @@ def create_channel(
     ) -> grpc.Channel:
         """Create and return a gRPC channel object.
         Args:
-            address (Optionsl[str]): The host for the channel to use.
+            address (Optional[str]): The host for the channel to use.
             credentials (Optional[~.Credentials]): The
                 authorization credentials to attach to requests. These
                 credentials identify this application to the service. If
diff --git a/google/cloud/servicedirectory_v1/services/registration_service/transports/grpc_asyncio.py b/google/cloud/servicedirectory_v1/services/registration_service/transports/grpc_asyncio.py
index 4d00a2b1..ed330707 100644
--- a/google/cloud/servicedirectory_v1/services/registration_service/transports/grpc_asyncio.py
+++ b/google/cloud/servicedirectory_v1/services/registration_service/transports/grpc_asyncio.py
@@ -214,6 +214,10 @@ def __init__(
                 ssl_credentials=ssl_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             self._ssl_channel_credentials = ssl_credentials
         else:
@@ -232,6 +236,10 @@ def __init__(
                 ssl_credentials=ssl_channel_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
 
         # Run the base constructor.
diff --git a/google/cloud/servicedirectory_v1/types/__init__.py b/google/cloud/servicedirectory_v1/types/__init__.py
index b2e952d8..505b0c76 100644
--- a/google/cloud/servicedirectory_v1/types/__init__.py
+++ b/google/cloud/servicedirectory_v1/types/__init__.py
@@ -43,7 +43,6 @@
     DeleteEndpointRequest,
 )
 
-
 __all__ = (
     "Endpoint",
     "Service",
diff --git a/google/cloud/servicedirectory_v1beta1/__init__.py b/google/cloud/servicedirectory_v1beta1/__init__.py
index e20c9ec4..746d6a10 100644
--- a/google/cloud/servicedirectory_v1beta1/__init__.py
+++ b/google/cloud/servicedirectory_v1beta1/__init__.py
@@ -59,13 +59,13 @@
     "ListNamespacesResponse",
     "ListServicesRequest",
     "ListServicesResponse",
-    "LookupServiceClient",
     "Namespace",
+    "RegistrationServiceClient",
     "ResolveServiceRequest",
     "ResolveServiceResponse",
     "Service",
     "UpdateEndpointRequest",
     "UpdateNamespaceRequest",
     "UpdateServiceRequest",
-    "RegistrationServiceClient",
+    "LookupServiceClient",
 )
diff --git a/google/cloud/servicedirectory_v1beta1/services/lookup_service/transports/__init__.py b/google/cloud/servicedirectory_v1beta1/services/lookup_service/transports/__init__.py
index 73a8094b..7f438daf 100644
--- a/google/cloud/servicedirectory_v1beta1/services/lookup_service/transports/__init__.py
+++ b/google/cloud/servicedirectory_v1beta1/services/lookup_service/transports/__init__.py
@@ -28,7 +28,6 @@
 _transport_registry["grpc"] = LookupServiceGrpcTransport
 _transport_registry["grpc_asyncio"] = LookupServiceGrpcAsyncIOTransport
 
-
 __all__ = (
     "LookupServiceTransport",
     "LookupServiceGrpcTransport",
diff --git a/google/cloud/servicedirectory_v1beta1/services/lookup_service/transports/grpc.py b/google/cloud/servicedirectory_v1beta1/services/lookup_service/transports/grpc.py
index 5332a1b0..6cbb7fbb 100644
--- a/google/cloud/servicedirectory_v1beta1/services/lookup_service/transports/grpc.py
+++ b/google/cloud/servicedirectory_v1beta1/services/lookup_service/transports/grpc.py
@@ -146,6 +146,10 @@ def __init__(
                 ssl_credentials=ssl_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             self._ssl_channel_credentials = ssl_credentials
         else:
@@ -164,6 +168,10 @@ def __init__(
                 ssl_credentials=ssl_channel_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
 
         self._stubs = {}  # type: Dict[str, Callable]
@@ -190,7 +198,7 @@ def create_channel(
     ) -> grpc.Channel:
         """Create and return a gRPC channel object.
         Args:
-            address (Optionsl[str]): The host for the channel to use.
+            address (Optional[str]): The host for the channel to use.
             credentials (Optional[~.Credentials]): The
                 authorization credentials to attach to requests. These
                 credentials identify this application to the service. If
diff --git a/google/cloud/servicedirectory_v1beta1/services/lookup_service/transports/grpc_asyncio.py b/google/cloud/servicedirectory_v1beta1/services/lookup_service/transports/grpc_asyncio.py
index 2d5cee07..ff8ce54a 100644
--- a/google/cloud/servicedirectory_v1beta1/services/lookup_service/transports/grpc_asyncio.py
+++ b/google/cloud/servicedirectory_v1beta1/services/lookup_service/transports/grpc_asyncio.py
@@ -191,6 +191,10 @@ def __init__(
                 ssl_credentials=ssl_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             self._ssl_channel_credentials = ssl_credentials
         else:
@@ -209,6 +213,10 @@ def __init__(
                 ssl_credentials=ssl_channel_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
 
         # Run the base constructor.
diff --git a/google/cloud/servicedirectory_v1beta1/services/registration_service/transports/__init__.py b/google/cloud/servicedirectory_v1beta1/services/registration_service/transports/__init__.py
index 1d3a2a28..f98d90f9 100644
--- a/google/cloud/servicedirectory_v1beta1/services/registration_service/transports/__init__.py
+++ b/google/cloud/servicedirectory_v1beta1/services/registration_service/transports/__init__.py
@@ -30,7 +30,6 @@
 _transport_registry["grpc"] = RegistrationServiceGrpcTransport
 _transport_registry["grpc_asyncio"] = RegistrationServiceGrpcAsyncIOTransport
 
-
 __all__ = (
     "RegistrationServiceTransport",
     "RegistrationServiceGrpcTransport",
diff --git a/google/cloud/servicedirectory_v1beta1/services/registration_service/transports/grpc.py b/google/cloud/servicedirectory_v1beta1/services/registration_service/transports/grpc.py
index 486af782..6f0b0e23 100644
--- a/google/cloud/servicedirectory_v1beta1/services/registration_service/transports/grpc.py
+++ b/google/cloud/servicedirectory_v1beta1/services/registration_service/transports/grpc.py
@@ -170,6 +170,10 @@ def __init__(
                 ssl_credentials=ssl_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             self._ssl_channel_credentials = ssl_credentials
         else:
@@ -188,6 +192,10 @@ def __init__(
                 ssl_credentials=ssl_channel_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
 
         self._stubs = {}  # type: Dict[str, Callable]
@@ -214,7 +222,7 @@ def create_channel(
     ) -> grpc.Channel:
         """Create and return a gRPC channel object.
         Args:
-            address (Optionsl[str]): The host for the channel to use.
+            address (Optional[str]): The host for the channel to use.
             credentials (Optional[~.Credentials]): The
                 authorization credentials to attach to requests. These
                 credentials identify this application to the service. If
diff --git a/google/cloud/servicedirectory_v1beta1/services/registration_service/transports/grpc_asyncio.py b/google/cloud/servicedirectory_v1beta1/services/registration_service/transports/grpc_asyncio.py
index 882e3f3a..fa04dc14 100644
--- a/google/cloud/servicedirectory_v1beta1/services/registration_service/transports/grpc_asyncio.py
+++ b/google/cloud/servicedirectory_v1beta1/services/registration_service/transports/grpc_asyncio.py
@@ -215,6 +215,10 @@ def __init__(
                 ssl_credentials=ssl_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             self._ssl_channel_credentials = ssl_credentials
         else:
@@ -233,6 +237,10 @@ def __init__(
                 ssl_credentials=ssl_channel_credentials,
                 scopes=scopes or self.AUTH_SCOPES,
                 quota_project_id=quota_project_id,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
 
         # Run the base constructor.
diff --git a/google/cloud/servicedirectory_v1beta1/types/__init__.py b/google/cloud/servicedirectory_v1beta1/types/__init__.py
index b2e952d8..505b0c76 100644
--- a/google/cloud/servicedirectory_v1beta1/types/__init__.py
+++ b/google/cloud/servicedirectory_v1beta1/types/__init__.py
@@ -43,7 +43,6 @@
     DeleteEndpointRequest,
 )
 
-
 __all__ = (
     "Endpoint",
     "Service",
diff --git a/synth.metadata b/synth.metadata
index dd42963b..3bad1b52 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -4,15 +4,15 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/python-service-directory.git",
-        "sha": "1258a54cfd6cd82a73787b0d2c9ff5df076f71e7"
+        "sha": "e689791bf2024af664b36d1101c1af4b7b6b7582"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "2d22118d88946059ab0c3a05588f577a6e82a0c4",
-        "internalRef": "345621354"
+        "sha": "f967ea0c0437a269515665ff9dbb69fcf134ddd9",
+        "internalRef": "347681363"
       }
     },
     {
diff --git a/tests/unit/gapic/servicedirectory_v1/test_lookup_service.py b/tests/unit/gapic/servicedirectory_v1/test_lookup_service.py
index e130e3af..b910a744 100644
--- a/tests/unit/gapic/servicedirectory_v1/test_lookup_service.py
+++ b/tests/unit/gapic/servicedirectory_v1/test_lookup_service.py
@@ -801,6 +801,10 @@ def test_lookup_service_transport_channel_mtls_with_client_cert_source(transport
                 scopes=("https://www.googleapis.com/auth/cloud-platform",),
                 ssl_credentials=mock_ssl_cred,
                 quota_project_id=None,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             assert transport.grpc_channel == mock_grpc_channel
             assert transport._ssl_channel_credentials == mock_ssl_cred
@@ -842,6 +846,10 @@ def test_lookup_service_transport_channel_mtls_with_adc(transport_class):
                 scopes=("https://www.googleapis.com/auth/cloud-platform",),
                 ssl_credentials=mock_ssl_cred,
                 quota_project_id=None,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             assert transport.grpc_channel == mock_grpc_channel
 
diff --git a/tests/unit/gapic/servicedirectory_v1/test_registration_service.py b/tests/unit/gapic/servicedirectory_v1/test_registration_service.py
index 819f41b8..2d4b9a81 100644
--- a/tests/unit/gapic/servicedirectory_v1/test_registration_service.py
+++ b/tests/unit/gapic/servicedirectory_v1/test_registration_service.py
@@ -4692,6 +4692,10 @@ def test_registration_service_transport_channel_mtls_with_client_cert_source(
                 scopes=("https://www.googleapis.com/auth/cloud-platform",),
                 ssl_credentials=mock_ssl_cred,
                 quota_project_id=None,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             assert transport.grpc_channel == mock_grpc_channel
             assert transport._ssl_channel_credentials == mock_ssl_cred
@@ -4733,6 +4737,10 @@ def test_registration_service_transport_channel_mtls_with_adc(transport_class):
                 scopes=("https://www.googleapis.com/auth/cloud-platform",),
                 ssl_credentials=mock_ssl_cred,
                 quota_project_id=None,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             assert transport.grpc_channel == mock_grpc_channel
 
diff --git a/tests/unit/gapic/servicedirectory_v1beta1/test_lookup_service.py b/tests/unit/gapic/servicedirectory_v1beta1/test_lookup_service.py
index 7b916795..28985b07 100644
--- a/tests/unit/gapic/servicedirectory_v1beta1/test_lookup_service.py
+++ b/tests/unit/gapic/servicedirectory_v1beta1/test_lookup_service.py
@@ -803,6 +803,10 @@ def test_lookup_service_transport_channel_mtls_with_client_cert_source(transport
                 scopes=("https://www.googleapis.com/auth/cloud-platform",),
                 ssl_credentials=mock_ssl_cred,
                 quota_project_id=None,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             assert transport.grpc_channel == mock_grpc_channel
             assert transport._ssl_channel_credentials == mock_ssl_cred
@@ -844,6 +848,10 @@ def test_lookup_service_transport_channel_mtls_with_adc(transport_class):
                 scopes=("https://www.googleapis.com/auth/cloud-platform",),
                 ssl_credentials=mock_ssl_cred,
                 quota_project_id=None,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             assert transport.grpc_channel == mock_grpc_channel
 
diff --git a/tests/unit/gapic/servicedirectory_v1beta1/test_registration_service.py b/tests/unit/gapic/servicedirectory_v1beta1/test_registration_service.py
index 27b66c38..7da36c65 100644
--- a/tests/unit/gapic/servicedirectory_v1beta1/test_registration_service.py
+++ b/tests/unit/gapic/servicedirectory_v1beta1/test_registration_service.py
@@ -4694,6 +4694,10 @@ def test_registration_service_transport_channel_mtls_with_client_cert_source(
                 scopes=("https://www.googleapis.com/auth/cloud-platform",),
                 ssl_credentials=mock_ssl_cred,
                 quota_project_id=None,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             assert transport.grpc_channel == mock_grpc_channel
             assert transport._ssl_channel_credentials == mock_ssl_cred
@@ -4735,6 +4739,10 @@ def test_registration_service_transport_channel_mtls_with_adc(transport_class):
                 scopes=("https://www.googleapis.com/auth/cloud-platform",),
                 ssl_credentials=mock_ssl_cred,
                 quota_project_id=None,
+                options=[
+                    ("grpc.max_send_message_length", -1),
+                    ("grpc.max_receive_message_length", -1),
+                ],
             )
             assert transport.grpc_channel == mock_grpc_channel