diff --git a/google/cloud/servicecontrol_v1/services/quota_controller/async_client.py b/google/cloud/servicecontrol_v1/services/quota_controller/async_client.py
index 924d723..72f7bba 100644
--- a/google/cloud/servicecontrol_v1/services/quota_controller/async_client.py
+++ b/google/cloud/servicecontrol_v1/services/quota_controller/async_client.py
@@ -34,8 +34,7 @@
 
 
 class QuotaControllerAsyncClient:
-    """`Google Quota Control
-    API <https://cloud.google.com/service-control/overview>`__
+    """`Google Quota Control API </service-control/overview>`__
 
     Allows clients to allocate and release quota against a `managed
     service <https://cloud.google.com/service-management/reference/rpc/google.api/servicemanagement.v1#google.api.servicemanagement.v1.ManagedService>`__.
diff --git a/google/cloud/servicecontrol_v1/services/quota_controller/client.py b/google/cloud/servicecontrol_v1/services/quota_controller/client.py
index 5733c03..aa2f324 100644
--- a/google/cloud/servicecontrol_v1/services/quota_controller/client.py
+++ b/google/cloud/servicecontrol_v1/services/quota_controller/client.py
@@ -71,8 +71,7 @@ def get_transport_class(cls, label: str = None,) -> Type[QuotaControllerTranspor
 
 
 class QuotaControllerClient(metaclass=QuotaControllerClientMeta):
-    """`Google Quota Control
-    API <https://cloud.google.com/service-control/overview>`__
+    """`Google Quota Control API </service-control/overview>`__
 
     Allows clients to allocate and release quota against a `managed
     service <https://cloud.google.com/service-management/reference/rpc/google.api/servicemanagement.v1#google.api.servicemanagement.v1.ManagedService>`__.
diff --git a/google/cloud/servicecontrol_v1/services/quota_controller/transports/grpc.py b/google/cloud/servicecontrol_v1/services/quota_controller/transports/grpc.py
index 8e51c74..f15ca5c 100644
--- a/google/cloud/servicecontrol_v1/services/quota_controller/transports/grpc.py
+++ b/google/cloud/servicecontrol_v1/services/quota_controller/transports/grpc.py
@@ -31,8 +31,7 @@
 class QuotaControllerGrpcTransport(QuotaControllerTransport):
     """gRPC backend transport for QuotaController.
 
-    `Google Quota Control
-    API <https://cloud.google.com/service-control/overview>`__
+    `Google Quota Control API </service-control/overview>`__
 
     Allows clients to allocate and release quota against a `managed
     service <https://cloud.google.com/service-management/reference/rpc/google.api/servicemanagement.v1#google.api.servicemanagement.v1.ManagedService>`__.
diff --git a/google/cloud/servicecontrol_v1/services/quota_controller/transports/grpc_asyncio.py b/google/cloud/servicecontrol_v1/services/quota_controller/transports/grpc_asyncio.py
index 1702fd2..513eeba 100644
--- a/google/cloud/servicecontrol_v1/services/quota_controller/transports/grpc_asyncio.py
+++ b/google/cloud/servicecontrol_v1/services/quota_controller/transports/grpc_asyncio.py
@@ -33,8 +33,7 @@
 class QuotaControllerGrpcAsyncIOTransport(QuotaControllerTransport):
     """gRPC AsyncIO backend transport for QuotaController.
 
-    `Google Quota Control
-    API <https://cloud.google.com/service-control/overview>`__
+    `Google Quota Control API </service-control/overview>`__
 
     Allows clients to allocate and release quota against a `managed
     service <https://cloud.google.com/service-management/reference/rpc/google.api/servicemanagement.v1#google.api.servicemanagement.v1.ManagedService>`__.
diff --git a/google/cloud/servicecontrol_v1/services/service_controller/async_client.py b/google/cloud/servicecontrol_v1/services/service_controller/async_client.py
index a03b7d3..90935a7 100644
--- a/google/cloud/servicecontrol_v1/services/service_controller/async_client.py
+++ b/google/cloud/servicecontrol_v1/services/service_controller/async_client.py
@@ -34,8 +34,7 @@
 
 
 class ServiceControllerAsyncClient:
-    """`Google Service Control
-    API <https://cloud.google.com/service-control/overview>`__
+    """`Google Service Control API </service-control/overview>`__
 
     Lets clients check and report operations against a `managed
     service <https://cloud.google.com/service-management/reference/rpc/google.api/servicemanagement.v1#google.api.servicemanagement.v1.ManagedService>`__.
@@ -186,7 +185,7 @@ async def check(
 
         NOTE: the
         [CheckRequest][google.api.servicecontrol.v1.CheckRequest] has
-        the size limit of 64KB.
+        the size limit (wire-format byte size) of 1MB.
 
         This method requires the ``servicemanagement.services.check``
         permission on the specified service. For more information, see
@@ -215,7 +214,16 @@ async def check(
         # and friendly error handling.
         rpc = gapic_v1.method_async.wrap_method(
             self._client._transport.check,
-            default_timeout=None,
+            default_retry=retries.Retry(
+                initial=1.0,
+                maximum=10.0,
+                multiplier=1.3,
+                predicate=retries.if_exception_type(
+                    core_exceptions.ServiceUnavailable,
+                ),
+                deadline=5.0,
+            ),
+            default_timeout=5.0,
             client_info=DEFAULT_CLIENT_INFO,
         )
 
@@ -275,7 +283,7 @@ async def report(
         # and friendly error handling.
         rpc = gapic_v1.method_async.wrap_method(
             self._client._transport.report,
-            default_timeout=None,
+            default_timeout=16.0,
             client_info=DEFAULT_CLIENT_INFO,
         )
 
diff --git a/google/cloud/servicecontrol_v1/services/service_controller/client.py b/google/cloud/servicecontrol_v1/services/service_controller/client.py
index b1a6c4a..04eb198 100644
--- a/google/cloud/servicecontrol_v1/services/service_controller/client.py
+++ b/google/cloud/servicecontrol_v1/services/service_controller/client.py
@@ -73,8 +73,7 @@ def get_transport_class(
 
 
 class ServiceControllerClient(metaclass=ServiceControllerClientMeta):
-    """`Google Service Control
-    API <https://cloud.google.com/service-control/overview>`__
+    """`Google Service Control API </service-control/overview>`__
 
     Lets clients check and report operations against a `managed
     service <https://cloud.google.com/service-management/reference/rpc/google.api/servicemanagement.v1#google.api.servicemanagement.v1.ManagedService>`__.
@@ -359,7 +358,7 @@ def check(
 
         NOTE: the
         [CheckRequest][google.api.servicecontrol.v1.CheckRequest] has
-        the size limit of 64KB.
+        the size limit (wire-format byte size) of 1MB.
 
         This method requires the ``servicemanagement.services.check``
         permission on the specified service. For more information, see
diff --git a/google/cloud/servicecontrol_v1/services/service_controller/transports/base.py b/google/cloud/servicecontrol_v1/services/service_controller/transports/base.py
index 6bc2054..b2bbce7 100644
--- a/google/cloud/servicecontrol_v1/services/service_controller/transports/base.py
+++ b/google/cloud/servicecontrol_v1/services/service_controller/transports/base.py
@@ -158,10 +158,21 @@ def _prep_wrapped_messages(self, client_info):
         # Precompute the wrapped methods.
         self._wrapped_methods = {
             self.check: gapic_v1.method.wrap_method(
-                self.check, default_timeout=None, client_info=client_info,
+                self.check,
+                default_retry=retries.Retry(
+                    initial=1.0,
+                    maximum=10.0,
+                    multiplier=1.3,
+                    predicate=retries.if_exception_type(
+                        core_exceptions.ServiceUnavailable,
+                    ),
+                    deadline=5.0,
+                ),
+                default_timeout=5.0,
+                client_info=client_info,
             ),
             self.report: gapic_v1.method.wrap_method(
-                self.report, default_timeout=None, client_info=client_info,
+                self.report, default_timeout=16.0, client_info=client_info,
             ),
         }
 
diff --git a/google/cloud/servicecontrol_v1/services/service_controller/transports/grpc.py b/google/cloud/servicecontrol_v1/services/service_controller/transports/grpc.py
index 34443e1..f9e67bd 100644
--- a/google/cloud/servicecontrol_v1/services/service_controller/transports/grpc.py
+++ b/google/cloud/servicecontrol_v1/services/service_controller/transports/grpc.py
@@ -31,8 +31,7 @@
 class ServiceControllerGrpcTransport(ServiceControllerTransport):
     """gRPC backend transport for ServiceController.
 
-    `Google Service Control
-    API <https://cloud.google.com/service-control/overview>`__
+    `Google Service Control API </service-control/overview>`__
 
     Lets clients check and report operations against a `managed
     service <https://cloud.google.com/service-management/reference/rpc/google.api/servicemanagement.v1#google.api.servicemanagement.v1.ManagedService>`__.
@@ -246,7 +245,7 @@ def check(
 
         NOTE: the
         [CheckRequest][google.api.servicecontrol.v1.CheckRequest] has
-        the size limit of 64KB.
+        the size limit (wire-format byte size) of 1MB.
 
         This method requires the ``servicemanagement.services.check``
         permission on the specified service. For more information, see
diff --git a/google/cloud/servicecontrol_v1/services/service_controller/transports/grpc_asyncio.py b/google/cloud/servicecontrol_v1/services/service_controller/transports/grpc_asyncio.py
index bf717a5..67595d8 100644
--- a/google/cloud/servicecontrol_v1/services/service_controller/transports/grpc_asyncio.py
+++ b/google/cloud/servicecontrol_v1/services/service_controller/transports/grpc_asyncio.py
@@ -33,8 +33,7 @@
 class ServiceControllerGrpcAsyncIOTransport(ServiceControllerTransport):
     """gRPC AsyncIO backend transport for ServiceController.
 
-    `Google Service Control
-    API <https://cloud.google.com/service-control/overview>`__
+    `Google Service Control API </service-control/overview>`__
 
     Lets clients check and report operations against a `managed
     service <https://cloud.google.com/service-management/reference/rpc/google.api/servicemanagement.v1#google.api.servicemanagement.v1.ManagedService>`__.
@@ -251,7 +250,7 @@ def check(
 
         NOTE: the
         [CheckRequest][google.api.servicecontrol.v1.CheckRequest] has
-        the size limit of 64KB.
+        the size limit (wire-format byte size) of 1MB.
 
         This method requires the ``servicemanagement.services.check``
         permission on the specified service. For more information, see
diff --git a/google/cloud/servicecontrol_v1/types/distribution.py b/google/cloud/servicecontrol_v1/types/distribution.py
index c3791df..5c5ffa0 100644
--- a/google/cloud/servicecontrol_v1/types/distribution.py
+++ b/google/cloud/servicecontrol_v1/types/distribution.py
@@ -15,6 +15,8 @@
 #
 import proto  # type: ignore
 
+from google.api import distribution_pb2  # type: ignore
+
 
 __protobuf__ = proto.module(
     package="google.api.servicecontrol.v1", manifest={"Distribution",},
@@ -70,6 +72,9 @@ class Distribution(proto.Message):
             Buckets with exponentially growing width.
         explicit_buckets (google.cloud.servicecontrol_v1.types.Distribution.ExplicitBuckets):
             Buckets with arbitrary user-provided width.
+        exemplars (Sequence[google.api.distribution_pb2.Exemplar]):
+            Example points. Must be in increasing order of ``value``
+            field.
     """
 
     class LinearBuckets(proto.Message):
@@ -155,6 +160,9 @@ class ExplicitBuckets(proto.Message):
     explicit_buckets = proto.Field(
         proto.MESSAGE, number=9, oneof="bucket_option", message=ExplicitBuckets,
     )
+    exemplars = proto.RepeatedField(
+        proto.MESSAGE, number=10, message=distribution_pb2.Distribution.Exemplar,
+    )
 
 
 __all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/servicecontrol_v1/types/metric_value.py b/google/cloud/servicecontrol_v1/types/metric_value.py
index c679029..fa81d37 100644
--- a/google/cloud/servicecontrol_v1/types/metric_value.py
+++ b/google/cloud/servicecontrol_v1/types/metric_value.py
@@ -15,7 +15,7 @@
 #
 import proto  # type: ignore
 
-from google.cloud.servicecontrol_v1.types import distribution
+from google.cloud.servicecontrol_v1.types import distribution as gas_distribution
 from google.protobuf import timestamp_pb2  # type: ignore
 
 
@@ -33,15 +33,18 @@ class MetricValue(proto.Message):
             for the overriding relationship. Note that this map must not
             contain monitored resource labels.
         start_time (google.protobuf.timestamp_pb2.Timestamp):
-            The start of the time period over which this
-            metric value's measurement applies. The time
-            period has different semantics for different
-            metric types (cumulative, delta, and gauge). See
-            the metric definition documentation in the
-            service configuration for details.
+            The start of the time period over which this metric value's
+            measurement applies. The time period has different semantics
+            for different metric types (cumulative, delta, and gauge).
+            See the metric definition documentation in the service
+            configuration for details. If not specified,
+            [google.api.servicecontrol.v1.Operation.start_time][google.api.servicecontrol.v1.Operation.start_time]
+            will be used.
         end_time (google.protobuf.timestamp_pb2.Timestamp):
-            The end of the time period over which this
-            metric value's measurement applies.
+            The end of the time period over which this metric value's
+            measurement applies. If not specified,
+            [google.api.servicecontrol.v1.Operation.end_time][google.api.servicecontrol.v1.Operation.end_time]
+            will be used.
         bool_value (bool):
             A boolean value.
         int64_value (int):
@@ -62,7 +65,7 @@ class MetricValue(proto.Message):
     double_value = proto.Field(proto.DOUBLE, number=6, oneof="value",)
     string_value = proto.Field(proto.STRING, number=7, oneof="value",)
     distribution_value = proto.Field(
-        proto.MESSAGE, number=8, oneof="value", message=distribution.Distribution,
+        proto.MESSAGE, number=8, oneof="value", message=gas_distribution.Distribution,
     )
 
 
diff --git a/google/cloud/servicecontrol_v1/types/quota_controller.py b/google/cloud/servicecontrol_v1/types/quota_controller.py
index db2c7b1..0b74958 100644
--- a/google/cloud/servicecontrol_v1/types/quota_controller.py
+++ b/google/cloud/servicecontrol_v1/types/quota_controller.py
@@ -16,6 +16,7 @@
 import proto  # type: ignore
 
 from google.cloud.servicecontrol_v1.types import metric_value
+from google.rpc import status_pb2  # type: ignore
 
 
 __protobuf__ = proto.module(
@@ -176,6 +177,9 @@ class QuotaError(proto.Message):
         description (str):
             Free-form text that provides details on the
             cause of the error.
+        status (google.rpc.status_pb2.Status):
+            Contains additional information about the quota error. If
+            available, ``status.code`` will be non zero.
     """
 
     class Code(proto.Enum):
@@ -196,6 +200,7 @@ class Code(proto.Enum):
     code = proto.Field(proto.ENUM, number=1, enum=Code,)
     subject = proto.Field(proto.STRING, number=2,)
     description = proto.Field(proto.STRING, number=3,)
+    status = proto.Field(proto.MESSAGE, number=4, message=status_pb2.Status,)
 
 
 __all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/tests/unit/gapic/servicecontrol_v1/test_quota_controller.py b/tests/unit/gapic/servicecontrol_v1/test_quota_controller.py
index f913e86..7ddba9f 100644
--- a/tests/unit/gapic/servicecontrol_v1/test_quota_controller.py
+++ b/tests/unit/gapic/servicecontrol_v1/test_quota_controller.py
@@ -24,6 +24,7 @@
 from proto.marshal.rules.dates import DurationRule, TimestampRule
 
 
+from google.api import distribution_pb2  # type: ignore
 from google.api_core import client_options
 from google.api_core import exceptions as core_exceptions
 from google.api_core import gapic_v1
@@ -41,10 +42,11 @@
 from google.cloud.servicecontrol_v1.services.quota_controller.transports.base import (
     _GOOGLE_AUTH_VERSION,
 )
-from google.cloud.servicecontrol_v1.types import distribution
+from google.cloud.servicecontrol_v1.types import distribution as gas_distribution
 from google.cloud.servicecontrol_v1.types import metric_value
 from google.cloud.servicecontrol_v1.types import quota_controller
 from google.oauth2 import service_account
+from google.protobuf import any_pb2  # type: ignore
 from google.protobuf import timestamp_pb2  # type: ignore
 import google.auth
 
diff --git a/tests/unit/gapic/servicecontrol_v1/test_service_controller.py b/tests/unit/gapic/servicecontrol_v1/test_service_controller.py
index 94b51bf..526d1fd 100644
--- a/tests/unit/gapic/servicecontrol_v1/test_service_controller.py
+++ b/tests/unit/gapic/servicecontrol_v1/test_service_controller.py
@@ -24,6 +24,7 @@
 from proto.marshal.rules.dates import DurationRule, TimestampRule
 
 
+from google.api import distribution_pb2  # type: ignore
 from google.api_core import client_options
 from google.api_core import exceptions as core_exceptions
 from google.api_core import gapic_v1
@@ -42,7 +43,7 @@
     _GOOGLE_AUTH_VERSION,
 )
 from google.cloud.servicecontrol_v1.types import check_error
-from google.cloud.servicecontrol_v1.types import distribution
+from google.cloud.servicecontrol_v1.types import distribution as gas_distribution
 from google.cloud.servicecontrol_v1.types import http_request
 from google.cloud.servicecontrol_v1.types import log_entry
 from google.cloud.servicecontrol_v1.types import metric_value