diff --git a/metadata/Api/Client.php b/metadata/Api/Client.php
index 43e474f..8ff39b0 100644
Binary files a/metadata/Api/Client.php and b/metadata/Api/Client.php differ
diff --git a/metadata/Api/ErrorReason.php b/metadata/Api/ErrorReason.php
index def5de9..22bd2d6 100644
Binary files a/metadata/Api/ErrorReason.php and b/metadata/Api/ErrorReason.php differ
diff --git a/src/Api/Documentation.php b/src/Api/Documentation.php
index b3c3c25..aced421 100644
--- a/src/Api/Documentation.php
+++ b/src/Api/Documentation.php
@@ -20,7 +20,7 @@
  *     content: (== include google/foo/overview.md ==)
  *   - name: Tutorial
  *     content: (== include google/foo/tutorial.md ==)
- *     subpages;
+ *     subpages:
  *     - name: Java
  *       content: (== include google/foo/tutorial_java.md ==)
  *   rules:
diff --git a/src/Api/ErrorReason.php b/src/Api/ErrorReason.php
index c91e2e5..b582e36 100644
--- a/src/Api/ErrorReason.php
+++ b/src/Api/ErrorReason.php
@@ -576,6 +576,25 @@ class ErrorReason
      * Generated from protobuf enum <code>GCP_SUSPENDED = 30;</code>
      */
     const GCP_SUSPENDED = 30;
+    /**
+     * The request violates the location policies when creating resources in
+     * the restricted region.
+     * Example of an ErrorInfo when creating the Cloud Storage Bucket by
+     * "projects/123" for service storage.googleapis.com:
+     *     { "reason": "LOCATION_POLICY_VIOLATED",
+     *       "domain": "googleapis.com",
+     *       "metadata": {
+     *         "consumer": "projects/123",
+     *         "service": "storage.googleapis.com",
+     *       }
+     *     }
+     * This response indicates creating the Cloud Storage Bucket in
+     * "locations/asia-northeast3" violates at least one location policy.
+     * The troubleshooting guidance is provided in the Help links.
+     *
+     * Generated from protobuf enum <code>LOCATION_POLICY_VIOLATED = 31;</code>
+     */
+    const LOCATION_POLICY_VIOLATED = 31;
 
     private static $valueToName = [
         self::ERROR_REASON_UNSPECIFIED => 'ERROR_REASON_UNSPECIFIED',
@@ -608,6 +627,7 @@ class ErrorReason
         self::ORG_RESTRICTION_HEADER_INVALID => 'ORG_RESTRICTION_HEADER_INVALID',
         self::SERVICE_NOT_VISIBLE => 'SERVICE_NOT_VISIBLE',
         self::GCP_SUSPENDED => 'GCP_SUSPENDED',
+        self::LOCATION_POLICY_VIOLATED => 'LOCATION_POLICY_VIOLATED',
     ];
 
     public static function name($value)
diff --git a/src/Api/FieldInfo/Format.php b/src/Api/FieldInfo/Format.php
index ba9609a..1977ca9 100644
--- a/src/Api/FieldInfo/Format.php
+++ b/src/Api/FieldInfo/Format.php
@@ -42,9 +42,9 @@ class Format
     /**
      * Internet Protocol v6 value as defined by [RFC
      * 2460](https://datatracker.ietf.org/doc/html/rfc2460). The value may be
-     * normalized to entirely lowercase letters, and zero-padded partial and
-     * empty octets. For example, the value `2001:DB8::` would be normalized to
-     * `2001:0db8:0:0`.
+     * normalized to entirely lowercase letters with zeros compressed, following
+     * [RFC 5952](https://datatracker.ietf.org/doc/html/rfc5952). For example,
+     * the value `2001:0DB8:0::0` would be normalized to `2001:db8::`.
      *
      * Generated from protobuf enum <code>IPV6 = 3;</code>
      */
diff --git a/src/Api/MonitoredResourceDescriptor.php b/src/Api/MonitoredResourceDescriptor.php
index 0435199..c6727e2 100644
--- a/src/Api/MonitoredResourceDescriptor.php
+++ b/src/Api/MonitoredResourceDescriptor.php
@@ -37,7 +37,7 @@ class MonitoredResourceDescriptor extends \Google\Protobuf\Internal\Message
     /**
      * Required. The monitored resource type. For example, the type
      * `"cloudsql_database"` represents databases in Google Cloud SQL.
-     *  For a list of types, see [Monitoring resource
+     *  For a list of types, see [Monitored resource
      *  types](https://cloud.google.com/monitoring/api/resources)
      * and [Logging resource
      * types](https://cloud.google.com/logging/docs/api/v2/resource-list).
@@ -92,7 +92,7 @@ class MonitoredResourceDescriptor extends \Google\Protobuf\Internal\Message
      *     @type string $type
      *           Required. The monitored resource type. For example, the type
      *           `"cloudsql_database"` represents databases in Google Cloud SQL.
-     *            For a list of types, see [Monitoring resource
+     *            For a list of types, see [Monitored resource
      *            types](https://cloud.google.com/monitoring/api/resources)
      *           and [Logging resource
      *           types](https://cloud.google.com/logging/docs/api/v2/resource-list).
@@ -156,7 +156,7 @@ public function setName($var)
     /**
      * Required. The monitored resource type. For example, the type
      * `"cloudsql_database"` represents databases in Google Cloud SQL.
-     *  For a list of types, see [Monitoring resource
+     *  For a list of types, see [Monitored resource
      *  types](https://cloud.google.com/monitoring/api/resources)
      * and [Logging resource
      * types](https://cloud.google.com/logging/docs/api/v2/resource-list).
@@ -172,7 +172,7 @@ public function getType()
     /**
      * Required. The monitored resource type. For example, the type
      * `"cloudsql_database"` represents databases in Google Cloud SQL.
-     *  For a list of types, see [Monitoring resource
+     *  For a list of types, see [Monitored resource
      *  types](https://cloud.google.com/monitoring/api/resources)
      * and [Logging resource
      * types](https://cloud.google.com/logging/docs/api/v2/resource-list).
diff --git a/src/Api/Publishing.php b/src/Api/Publishing.php
index 48bbd9f..6618617 100644
--- a/src/Api/Publishing.php
+++ b/src/Api/Publishing.php
@@ -87,6 +87,13 @@ class Publishing extends \Google\Protobuf\Internal\Message
      * Generated from protobuf field <code>string proto_reference_documentation_uri = 110;</code>
      */
     protected $proto_reference_documentation_uri = '';
+    /**
+     * Optional link to REST reference documentation.  Example:
+     * https://cloud.google.com/pubsub/lite/docs/reference/rest
+     *
+     * Generated from protobuf field <code>string rest_reference_documentation_uri = 111;</code>
+     */
+    protected $rest_reference_documentation_uri = '';
 
     /**
      * Constructor.
@@ -124,6 +131,9 @@ class Publishing extends \Google\Protobuf\Internal\Message
      *     @type string $proto_reference_documentation_uri
      *           Optional link to proto reference documentation.  Example:
      *           https://cloud.google.com/pubsub/lite/docs/reference/rpc
+     *     @type string $rest_reference_documentation_uri
+     *           Optional link to REST reference documentation.  Example:
+     *           https://cloud.google.com/pubsub/lite/docs/reference/rest
      * }
      */
     public function __construct($data = NULL) {
@@ -411,5 +421,33 @@ public function setProtoReferenceDocumentationUri($var)
         return $this;
     }
 
+    /**
+     * Optional link to REST reference documentation.  Example:
+     * https://cloud.google.com/pubsub/lite/docs/reference/rest
+     *
+     * Generated from protobuf field <code>string rest_reference_documentation_uri = 111;</code>
+     * @return string
+     */
+    public function getRestReferenceDocumentationUri()
+    {
+        return $this->rest_reference_documentation_uri;
+    }
+
+    /**
+     * Optional link to REST reference documentation.  Example:
+     * https://cloud.google.com/pubsub/lite/docs/reference/rest
+     *
+     * Generated from protobuf field <code>string rest_reference_documentation_uri = 111;</code>
+     * @param string $var
+     * @return $this
+     */
+    public function setRestReferenceDocumentationUri($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->rest_reference_documentation_uri = $var;
+
+        return $this;
+    }
+
 }