diff --git a/packages/google-cloud-certificate-manager/google/cloud/certificate_manager_v1/services/certificate_manager/client.py b/packages/google-cloud-certificate-manager/google/cloud/certificate_manager_v1/services/certificate_manager/client.py
index 1a8ee724bfd0..2dafe1157ec0 100644
--- a/packages/google-cloud-certificate-manager/google/cloud/certificate_manager_v1/services/certificate_manager/client.py
+++ b/packages/google-cloud-certificate-manager/google/cloud/certificate_manager_v1/services/certificate_manager/client.py
@@ -291,20 +291,20 @@ def parse_dns_authorization_path(path: str) -> Dict[str, str]:
     def target_https_proxies_path(
         project: str,
         location: str,
-        targetHttpsProxy: str,
+        target_https_proxy: str,
     ) -> str:
         """Returns a fully-qualified target_https_proxies string."""
-        return "projects/{project}/locations/{location}/targetHttpsProxies/{targetHttpsProxy}".format(
+        return "projects/{project}/locations/{location}/targetHttpsProxies/{target_https_proxy}".format(
             project=project,
             location=location,
-            targetHttpsProxy=targetHttpsProxy,
+            target_https_proxy=target_https_proxy,
         )
 
     @staticmethod
     def parse_target_https_proxies_path(path: str) -> Dict[str, str]:
         """Parses a target_https_proxies path into its component segments."""
         m = re.match(
-            r"^projects/(?P<project>.+?)/locations/(?P<location>.+?)/targetHttpsProxies/(?P<targetHttpsProxy>.+?)$",
+            r"^projects/(?P<project>.+?)/locations/(?P<location>.+?)/targetHttpsProxies/(?P<target_https_proxy>.+?)$",
             path,
         )
         return m.groupdict() if m else {}
@@ -313,20 +313,20 @@ def parse_target_https_proxies_path(path: str) -> Dict[str, str]:
     def target_ssl_proxies_path(
         project: str,
         location: str,
-        targetSslProxy: str,
+        target_ssl_proxy: str,
     ) -> str:
         """Returns a fully-qualified target_ssl_proxies string."""
-        return "projects/{project}/locations/{location}/targetSslProxies/{targetSslProxy}".format(
+        return "projects/{project}/locations/{location}/targetSslProxies/{target_ssl_proxy}".format(
             project=project,
             location=location,
-            targetSslProxy=targetSslProxy,
+            target_ssl_proxy=target_ssl_proxy,
         )
 
     @staticmethod
     def parse_target_ssl_proxies_path(path: str) -> Dict[str, str]:
         """Parses a target_ssl_proxies path into its component segments."""
         m = re.match(
-            r"^projects/(?P<project>.+?)/locations/(?P<location>.+?)/targetSslProxies/(?P<targetSslProxy>.+?)$",
+            r"^projects/(?P<project>.+?)/locations/(?P<location>.+?)/targetSslProxies/(?P<target_ssl_proxy>.+?)$",
             path,
         )
         return m.groupdict() if m else {}
diff --git a/packages/google-cloud-certificate-manager/google/cloud/certificate_manager_v1/types/certificate_manager.py b/packages/google-cloud-certificate-manager/google/cloud/certificate_manager_v1/types/certificate_manager.py
index 6fffbeda0a36..825a1b292080 100644
--- a/packages/google-cloud-certificate-manager/google/cloud/certificate_manager_v1/types/certificate_manager.py
+++ b/packages/google-cloud-certificate-manager/google/cloud/certificate_manager_v1/types/certificate_manager.py
@@ -849,7 +849,10 @@ class Certificate(proto.Message):
         san_dnsnames (Sequence[str]):
             Output only. The list of Subject Alternative
             Names of dnsName type defined in the certificate
-            (see RFC 5280 4.2.1.6)
+            (see RFC 5280 4.2.1.6). Managed certificates
+            that haven't been provisioned yet have this
+            field populated with a value of the
+            managed.domains field.
         pem_certificate (str):
             Output only. The PEM-encoded certificate
             chain.
diff --git a/packages/google-cloud-certificate-manager/tests/unit/gapic/certificate_manager_v1/test_certificate_manager.py b/packages/google-cloud-certificate-manager/tests/unit/gapic/certificate_manager_v1/test_certificate_manager.py
index 5b39fbd12fd5..6c0947bb9ba2 100644
--- a/packages/google-cloud-certificate-manager/tests/unit/gapic/certificate_manager_v1/test_certificate_manager.py
+++ b/packages/google-cloud-certificate-manager/tests/unit/gapic/certificate_manager_v1/test_certificate_manager.py
@@ -7099,14 +7099,14 @@ def test_parse_dns_authorization_path():
 def test_target_https_proxies_path():
     project = "whelk"
     location = "octopus"
-    targetHttpsProxy = "oyster"
-    expected = "projects/{project}/locations/{location}/targetHttpsProxies/{targetHttpsProxy}".format(
+    target_https_proxy = "oyster"
+    expected = "projects/{project}/locations/{location}/targetHttpsProxies/{target_https_proxy}".format(
         project=project,
         location=location,
-        targetHttpsProxy=targetHttpsProxy,
+        target_https_proxy=target_https_proxy,
     )
     actual = CertificateManagerClient.target_https_proxies_path(
-        project, location, targetHttpsProxy
+        project, location, target_https_proxy
     )
     assert expected == actual
 
@@ -7115,7 +7115,7 @@ def test_parse_target_https_proxies_path():
     expected = {
         "project": "nudibranch",
         "location": "cuttlefish",
-        "targetHttpsProxy": "mussel",
+        "target_https_proxy": "mussel",
     }
     path = CertificateManagerClient.target_https_proxies_path(**expected)
 
@@ -7127,14 +7127,14 @@ def test_parse_target_https_proxies_path():
 def test_target_ssl_proxies_path():
     project = "winkle"
     location = "nautilus"
-    targetSslProxy = "scallop"
-    expected = "projects/{project}/locations/{location}/targetSslProxies/{targetSslProxy}".format(
+    target_ssl_proxy = "scallop"
+    expected = "projects/{project}/locations/{location}/targetSslProxies/{target_ssl_proxy}".format(
         project=project,
         location=location,
-        targetSslProxy=targetSslProxy,
+        target_ssl_proxy=target_ssl_proxy,
     )
     actual = CertificateManagerClient.target_ssl_proxies_path(
-        project, location, targetSslProxy
+        project, location, target_ssl_proxy
     )
     assert expected == actual
 
@@ -7143,7 +7143,7 @@ def test_parse_target_ssl_proxies_path():
     expected = {
         "project": "abalone",
         "location": "squid",
-        "targetSslProxy": "clam",
+        "target_ssl_proxy": "clam",
     }
     path = CertificateManagerClient.target_ssl_proxies_path(**expected)