diff --git a/Dataplex/metadata/V1/Datascans.php b/Dataplex/metadata/V1/Datascans.php
index 3c7017edb1c8..3f0c223ca621 100644
Binary files a/Dataplex/metadata/V1/Datascans.php and b/Dataplex/metadata/V1/Datascans.php differ
diff --git a/Dataplex/samples/V1/CatalogServiceClient/search_entries.php b/Dataplex/samples/V1/CatalogServiceClient/search_entries.php
index 277668d2fbb1..e93588c97df5 100644
--- a/Dataplex/samples/V1/CatalogServiceClient/search_entries.php
+++ b/Dataplex/samples/V1/CatalogServiceClient/search_entries.php
@@ -36,6 +36,8 @@
  *                              following form: `projects/{project}/locations/{location}`. Please see
  *                              {@see CatalogServiceClient::locationName()} for help formatting this field.
  * @param string $query         The query against which entries in scope should be matched.
+ *                              The query syntax is defined in [Search syntax for Dataplex
+ *                              Catalog](https://cloud.google.com/dataplex/docs/search-syntax).
  */
 function search_entries_sample(string $formattedName, string $query): void
 {
diff --git a/Dataplex/samples/V1/DataScanServiceClient/update_data_scan.php b/Dataplex/samples/V1/DataScanServiceClient/update_data_scan.php
index a72a6a8a64f5..277eb4057257 100644
--- a/Dataplex/samples/V1/DataScanServiceClient/update_data_scan.php
+++ b/Dataplex/samples/V1/DataScanServiceClient/update_data_scan.php
@@ -29,7 +29,6 @@
 use Google\Cloud\Dataplex\V1\DataScan;
 use Google\Cloud\Dataplex\V1\DataSource;
 use Google\Cloud\Dataplex\V1\UpdateDataScanRequest;
-use Google\Protobuf\FieldMask;
 use Google\Rpc\Status;
 
 /**
@@ -50,10 +49,8 @@ function update_data_scan_sample(): void
     $dataScanData = new DataSource();
     $dataScan = (new DataScan())
         ->setData($dataScanData);
-    $updateMask = new FieldMask();
     $request = (new UpdateDataScanRequest())
-        ->setDataScan($dataScan)
-        ->setUpdateMask($updateMask);
+        ->setDataScan($dataScan);
 
     // Call the API and handle any network failures.
     try {
diff --git a/Dataplex/src/V1/DataScan.php b/Dataplex/src/V1/DataScan.php
index 8564e293463c..57658a627181 100644
--- a/Dataplex/src/V1/DataScan.php
+++ b/Dataplex/src/V1/DataScan.php
@@ -23,19 +23,19 @@
 class DataScan extends \Google\Protobuf\Internal\Message
 {
     /**
-     * Output only. The relative resource name of the scan, of the form:
-     * `projects/{project}/locations/{location_id}/dataScans/{datascan_id}`,
+     * Output only. Identifier. The relative resource name of the scan, of the
+     * form: `projects/{project}/locations/{location_id}/dataScans/{datascan_id}`,
      * where `project` refers to a *project_id* or *project_number* and
      * `location_id` refers to a GCP region.
      *
-     * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.field_behavior) = IDENTIFIER];</code>
      */
     protected $name = '';
     /**
      * Output only. System generated globally unique ID for the scan. This ID will
      * be different if the scan is deleted and re-created with the same name.
      *
-     * Generated from protobuf field <code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * Generated from protobuf field <code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.field_info) = {</code>
      */
     protected $uid = '';
     /**
@@ -111,8 +111,8 @@ class DataScan extends \Google\Protobuf\Internal\Message
      *     Optional. Data for populating the Message object.
      *
      *     @type string $name
-     *           Output only. The relative resource name of the scan, of the form:
-     *           `projects/{project}/locations/{location_id}/dataScans/{datascan_id}`,
+     *           Output only. Identifier. The relative resource name of the scan, of the
+     *           form: `projects/{project}/locations/{location_id}/dataScans/{datascan_id}`,
      *           where `project` refers to a *project_id* or *project_number* and
      *           `location_id` refers to a GCP region.
      *     @type string $uid
@@ -161,12 +161,12 @@ public function __construct($data = NULL) {
     }
 
     /**
-     * Output only. The relative resource name of the scan, of the form:
-     * `projects/{project}/locations/{location_id}/dataScans/{datascan_id}`,
+     * Output only. Identifier. The relative resource name of the scan, of the
+     * form: `projects/{project}/locations/{location_id}/dataScans/{datascan_id}`,
      * where `project` refers to a *project_id* or *project_number* and
      * `location_id` refers to a GCP region.
      *
-     * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.field_behavior) = IDENTIFIER];</code>
      * @return string
      */
     public function getName()
@@ -175,12 +175,12 @@ public function getName()
     }
 
     /**
-     * Output only. The relative resource name of the scan, of the form:
-     * `projects/{project}/locations/{location_id}/dataScans/{datascan_id}`,
+     * Output only. Identifier. The relative resource name of the scan, of the
+     * form: `projects/{project}/locations/{location_id}/dataScans/{datascan_id}`,
      * where `project` refers to a *project_id* or *project_number* and
      * `location_id` refers to a GCP region.
      *
-     * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.field_behavior) = IDENTIFIER];</code>
      * @param string $var
      * @return $this
      */
@@ -196,7 +196,7 @@ public function setName($var)
      * Output only. System generated globally unique ID for the scan. This ID will
      * be different if the scan is deleted and re-created with the same name.
      *
-     * Generated from protobuf field <code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * Generated from protobuf field <code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.field_info) = {</code>
      * @return string
      */
     public function getUid()
@@ -208,7 +208,7 @@ public function getUid()
      * Output only. System generated globally unique ID for the scan. This ID will
      * be different if the scan is deleted and re-created with the same name.
      *
-     * Generated from protobuf field <code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * Generated from protobuf field <code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.field_info) = {</code>
      * @param string $var
      * @return $this
      */
diff --git a/Dataplex/src/V1/DataScan/ExecutionStatus.php b/Dataplex/src/V1/DataScan/ExecutionStatus.php
index 3ffe1ed23e80..586ee5d62dc1 100644
--- a/Dataplex/src/V1/DataScan/ExecutionStatus.php
+++ b/Dataplex/src/V1/DataScan/ExecutionStatus.php
@@ -16,15 +16,15 @@
 class ExecutionStatus extends \Google\Protobuf\Internal\Message
 {
     /**
-     * The time when the latest DataScanJob started.
+     * Optional. The time when the latest DataScanJob started.
      *
-     * Generated from protobuf field <code>.google.protobuf.Timestamp latest_job_start_time = 4;</code>
+     * Generated from protobuf field <code>.google.protobuf.Timestamp latest_job_start_time = 4 [(.google.api.field_behavior) = OPTIONAL];</code>
      */
     protected $latest_job_start_time = null;
     /**
-     * The time when the latest DataScanJob ended.
+     * Optional. The time when the latest DataScanJob ended.
      *
-     * Generated from protobuf field <code>.google.protobuf.Timestamp latest_job_end_time = 5;</code>
+     * Generated from protobuf field <code>.google.protobuf.Timestamp latest_job_end_time = 5 [(.google.api.field_behavior) = OPTIONAL];</code>
      */
     protected $latest_job_end_time = null;
     /**
@@ -41,9 +41,9 @@ class ExecutionStatus extends \Google\Protobuf\Internal\Message
      *     Optional. Data for populating the Message object.
      *
      *     @type \Google\Protobuf\Timestamp $latest_job_start_time
-     *           The time when the latest DataScanJob started.
+     *           Optional. The time when the latest DataScanJob started.
      *     @type \Google\Protobuf\Timestamp $latest_job_end_time
-     *           The time when the latest DataScanJob ended.
+     *           Optional. The time when the latest DataScanJob ended.
      *     @type \Google\Protobuf\Timestamp $latest_job_create_time
      *           Optional. The time when the DataScanJob execution was created.
      * }
@@ -54,9 +54,9 @@ public function __construct($data = NULL) {
     }
 
     /**
-     * The time when the latest DataScanJob started.
+     * Optional. The time when the latest DataScanJob started.
      *
-     * Generated from protobuf field <code>.google.protobuf.Timestamp latest_job_start_time = 4;</code>
+     * Generated from protobuf field <code>.google.protobuf.Timestamp latest_job_start_time = 4 [(.google.api.field_behavior) = OPTIONAL];</code>
      * @return \Google\Protobuf\Timestamp|null
      */
     public function getLatestJobStartTime()
@@ -75,9 +75,9 @@ public function clearLatestJobStartTime()
     }
 
     /**
-     * The time when the latest DataScanJob started.
+     * Optional. The time when the latest DataScanJob started.
      *
-     * Generated from protobuf field <code>.google.protobuf.Timestamp latest_job_start_time = 4;</code>
+     * Generated from protobuf field <code>.google.protobuf.Timestamp latest_job_start_time = 4 [(.google.api.field_behavior) = OPTIONAL];</code>
      * @param \Google\Protobuf\Timestamp $var
      * @return $this
      */
@@ -90,9 +90,9 @@ public function setLatestJobStartTime($var)
     }
 
     /**
-     * The time when the latest DataScanJob ended.
+     * Optional. The time when the latest DataScanJob ended.
      *
-     * Generated from protobuf field <code>.google.protobuf.Timestamp latest_job_end_time = 5;</code>
+     * Generated from protobuf field <code>.google.protobuf.Timestamp latest_job_end_time = 5 [(.google.api.field_behavior) = OPTIONAL];</code>
      * @return \Google\Protobuf\Timestamp|null
      */
     public function getLatestJobEndTime()
@@ -111,9 +111,9 @@ public function clearLatestJobEndTime()
     }
 
     /**
-     * The time when the latest DataScanJob ended.
+     * Optional. The time when the latest DataScanJob ended.
      *
-     * Generated from protobuf field <code>.google.protobuf.Timestamp latest_job_end_time = 5;</code>
+     * Generated from protobuf field <code>.google.protobuf.Timestamp latest_job_end_time = 5 [(.google.api.field_behavior) = OPTIONAL];</code>
      * @param \Google\Protobuf\Timestamp $var
      * @return $this
      */
diff --git a/Dataplex/src/V1/DataScanJob.php b/Dataplex/src/V1/DataScanJob.php
index 4a02706e3001..1ef4c79928fe 100644
--- a/Dataplex/src/V1/DataScanJob.php
+++ b/Dataplex/src/V1/DataScanJob.php
@@ -16,18 +16,19 @@
 class DataScanJob extends \Google\Protobuf\Internal\Message
 {
     /**
-     * Output only. The relative resource name of the DataScanJob, of the form:
+     * Output only. Identifier. The relative resource name of the DataScanJob, of
+     * the form:
      * `projects/{project}/locations/{location_id}/dataScans/{datascan_id}/jobs/{job_id}`,
      * where `project` refers to a *project_id* or *project_number* and
      * `location_id` refers to a GCP region.
      *
-     * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.field_behavior) = IDENTIFIER];</code>
      */
     protected $name = '';
     /**
      * Output only. System generated globally unique ID for the DataScanJob.
      *
-     * Generated from protobuf field <code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * Generated from protobuf field <code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.field_info) = {</code>
      */
     protected $uid = '';
     /**
@@ -76,7 +77,8 @@ class DataScanJob extends \Google\Protobuf\Internal\Message
      *     Optional. Data for populating the Message object.
      *
      *     @type string $name
-     *           Output only. The relative resource name of the DataScanJob, of the form:
+     *           Output only. Identifier. The relative resource name of the DataScanJob, of
+     *           the form:
      *           `projects/{project}/locations/{location_id}/dataScans/{datascan_id}/jobs/{job_id}`,
      *           where `project` refers to a *project_id* or *project_number* and
      *           `location_id` refers to a GCP region.
@@ -114,12 +116,13 @@ public function __construct($data = NULL) {
     }
 
     /**
-     * Output only. The relative resource name of the DataScanJob, of the form:
+     * Output only. Identifier. The relative resource name of the DataScanJob, of
+     * the form:
      * `projects/{project}/locations/{location_id}/dataScans/{datascan_id}/jobs/{job_id}`,
      * where `project` refers to a *project_id* or *project_number* and
      * `location_id` refers to a GCP region.
      *
-     * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.field_behavior) = IDENTIFIER];</code>
      * @return string
      */
     public function getName()
@@ -128,12 +131,13 @@ public function getName()
     }
 
     /**
-     * Output only. The relative resource name of the DataScanJob, of the form:
+     * Output only. Identifier. The relative resource name of the DataScanJob, of
+     * the form:
      * `projects/{project}/locations/{location_id}/dataScans/{datascan_id}/jobs/{job_id}`,
      * where `project` refers to a *project_id* or *project_number* and
      * `location_id` refers to a GCP region.
      *
-     * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.field_behavior) = IDENTIFIER];</code>
      * @param string $var
      * @return $this
      */
@@ -148,7 +152,7 @@ public function setName($var)
     /**
      * Output only. System generated globally unique ID for the DataScanJob.
      *
-     * Generated from protobuf field <code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * Generated from protobuf field <code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.field_info) = {</code>
      * @return string
      */
     public function getUid()
@@ -159,7 +163,7 @@ public function getUid()
     /**
      * Output only. System generated globally unique ID for the DataScanJob.
      *
-     * Generated from protobuf field <code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
+     * Generated from protobuf field <code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.field_info) = {</code>
      * @param string $var
      * @return $this
      */
diff --git a/Dataplex/src/V1/DeleteDataScanRequest.php b/Dataplex/src/V1/DeleteDataScanRequest.php
index 613ef402d4ea..ca8703dff7a7 100644
--- a/Dataplex/src/V1/DeleteDataScanRequest.php
+++ b/Dataplex/src/V1/DeleteDataScanRequest.php
@@ -24,6 +24,14 @@ class DeleteDataScanRequest extends \Google\Protobuf\Internal\Message
      * Generated from protobuf field <code>string name = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = {</code>
      */
     protected $name = '';
+    /**
+     * Optional. If set to true, any child resources of this data scan will also
+     * be deleted. (Otherwise, the request will only work if the data scan has no
+     * child resources.)
+     *
+     * Generated from protobuf field <code>bool force = 2 [(.google.api.field_behavior) = OPTIONAL];</code>
+     */
+    protected $force = false;
 
     /**
      * @param string $name Required. The resource name of the dataScan:
@@ -53,6 +61,10 @@ public static function build(string $name): self
      *           `projects/{project}/locations/{location_id}/dataScans/{data_scan_id}`
      *           where `project` refers to a *project_id* or *project_number* and
      *           `location_id` refers to a GCP region.
+     *     @type bool $force
+     *           Optional. If set to true, any child resources of this data scan will also
+     *           be deleted. (Otherwise, the request will only work if the data scan has no
+     *           child resources.)
      * }
      */
     public function __construct($data = NULL) {
@@ -92,5 +104,35 @@ public function setName($var)
         return $this;
     }
 
+    /**
+     * Optional. If set to true, any child resources of this data scan will also
+     * be deleted. (Otherwise, the request will only work if the data scan has no
+     * child resources.)
+     *
+     * Generated from protobuf field <code>bool force = 2 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * @return bool
+     */
+    public function getForce()
+    {
+        return $this->force;
+    }
+
+    /**
+     * Optional. If set to true, any child resources of this data scan will also
+     * be deleted. (Otherwise, the request will only work if the data scan has no
+     * child resources.)
+     *
+     * Generated from protobuf field <code>bool force = 2 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * @param bool $var
+     * @return $this
+     */
+    public function setForce($var)
+    {
+        GPBUtil::checkBool($var);
+        $this->force = $var;
+
+        return $this;
+    }
+
 }
 
diff --git a/Dataplex/src/V1/ImportItem.php b/Dataplex/src/V1/ImportItem.php
index 15420b56d731..7da200146853 100644
--- a/Dataplex/src/V1/ImportItem.php
+++ b/Dataplex/src/V1/ImportItem.php
@@ -52,8 +52,9 @@ class ImportItem extends \Google\Protobuf\Internal\Message
      * aspect type and are attached directly to the entry.
      * * `{aspect_type_reference}&#64;{path}`: matches aspects that belong to the
      * specified aspect type and path.
-     * * `{aspect_type_reference}&#64;*`: matches aspects that belong to the specified
-     * aspect type for all paths.
+     * * `<aspect_type_reference>&#64;*` : matches aspects of the given type for all
+     * paths.
+     * * `*&#64;path` : matches aspects of all types on the given path.
      * Replace `{aspect_type_reference}` with a reference to the aspect type, in
      * the format
      * `{project_id_or_number}.{location_id}.{aspect_type_id}`.
@@ -95,8 +96,9 @@ class ImportItem extends \Google\Protobuf\Internal\Message
      *           aspect type and are attached directly to the entry.
      *           * `{aspect_type_reference}&#64;{path}`: matches aspects that belong to the
      *           specified aspect type and path.
-     *           * `{aspect_type_reference}&#64;*`: matches aspects that belong to the specified
-     *           aspect type for all paths.
+     *           * `<aspect_type_reference>&#64;*` : matches aspects of the given type for all
+     *           paths.
+     *           * `*&#64;path` : matches aspects of all types on the given path.
      *           Replace `{aspect_type_reference}` with a reference to the aspect type, in
      *           the format
      *           `{project_id_or_number}.{location_id}.{aspect_type_id}`.
@@ -215,8 +217,9 @@ public function setUpdateMask($var)
      * aspect type and are attached directly to the entry.
      * * `{aspect_type_reference}&#64;{path}`: matches aspects that belong to the
      * specified aspect type and path.
-     * * `{aspect_type_reference}&#64;*`: matches aspects that belong to the specified
-     * aspect type for all paths.
+     * * `<aspect_type_reference>&#64;*` : matches aspects of the given type for all
+     * paths.
+     * * `*&#64;path` : matches aspects of all types on the given path.
      * Replace `{aspect_type_reference}` with a reference to the aspect type, in
      * the format
      * `{project_id_or_number}.{location_id}.{aspect_type_id}`.
@@ -239,8 +242,9 @@ public function getAspectKeys()
      * aspect type and are attached directly to the entry.
      * * `{aspect_type_reference}&#64;{path}`: matches aspects that belong to the
      * specified aspect type and path.
-     * * `{aspect_type_reference}&#64;*`: matches aspects that belong to the specified
-     * aspect type for all paths.
+     * * `<aspect_type_reference>&#64;*` : matches aspects of the given type for all
+     * paths.
+     * * `*&#64;path` : matches aspects of all types on the given path.
      * Replace `{aspect_type_reference}` with a reference to the aspect type, in
      * the format
      * `{project_id_or_number}.{location_id}.{aspect_type_id}`.
diff --git a/Dataplex/src/V1/SearchEntriesRequest.php b/Dataplex/src/V1/SearchEntriesRequest.php
index e20d3397e1cf..a0813c2a3933 100644
--- a/Dataplex/src/V1/SearchEntriesRequest.php
+++ b/Dataplex/src/V1/SearchEntriesRequest.php
@@ -22,6 +22,8 @@ class SearchEntriesRequest extends \Google\Protobuf\Internal\Message
     protected $name = '';
     /**
      * Required. The query against which entries in scope should be matched.
+     * The query syntax is defined in [Search syntax for Dataplex
+     * Catalog](https://cloud.google.com/dataplex/docs/search-syntax).
      *
      * Generated from protobuf field <code>string query = 2 [(.google.api.field_behavior) = REQUIRED];</code>
      */
@@ -43,6 +45,10 @@ class SearchEntriesRequest extends \Google\Protobuf\Internal\Message
     protected $page_token = '';
     /**
      * Optional. Specifies the ordering of results.
+     * Supported values are:
+     * * `relevance` (default)
+     * * `last_modified_timestamp`
+     * * `last_modified_timestamp asc`
      *
      * Generated from protobuf field <code>string order_by = 5 [(.google.api.field_behavior) = OPTIONAL];</code>
      */
@@ -62,6 +68,8 @@ class SearchEntriesRequest extends \Google\Protobuf\Internal\Message
      *                      following form: `projects/{project}/locations/{location}`. Please see
      *                      {@see CatalogServiceClient::locationName()} for help formatting this field.
      * @param string $query Required. The query against which entries in scope should be matched.
+     *                      The query syntax is defined in [Search syntax for Dataplex
+     *                      Catalog](https://cloud.google.com/dataplex/docs/search-syntax).
      *
      * @return \Google\Cloud\Dataplex\V1\SearchEntriesRequest
      *
@@ -85,6 +93,8 @@ public static function build(string $name, string $query): self
      *           following form: `projects/{project}/locations/{location}`.
      *     @type string $query
      *           Required. The query against which entries in scope should be matched.
+     *           The query syntax is defined in [Search syntax for Dataplex
+     *           Catalog](https://cloud.google.com/dataplex/docs/search-syntax).
      *     @type int $page_size
      *           Optional. Number of results in the search page. If <=0, then defaults
      *           to 10. Max limit for page_size is 1000. Throws an invalid argument for
@@ -94,6 +104,10 @@ public static function build(string $name, string $query): self
      *           this to retrieve the subsequent page.
      *     @type string $order_by
      *           Optional. Specifies the ordering of results.
+     *           Supported values are:
+     *           * `relevance` (default)
+     *           * `last_modified_timestamp`
+     *           * `last_modified_timestamp asc`
      *     @type string $scope
      *           Optional. The scope under which the search should be operating. It must
      *           either be `organizations/<org_id>` or `projects/<project_ref>`. If it is
@@ -136,6 +150,8 @@ public function setName($var)
 
     /**
      * Required. The query against which entries in scope should be matched.
+     * The query syntax is defined in [Search syntax for Dataplex
+     * Catalog](https://cloud.google.com/dataplex/docs/search-syntax).
      *
      * Generated from protobuf field <code>string query = 2 [(.google.api.field_behavior) = REQUIRED];</code>
      * @return string
@@ -147,6 +163,8 @@ public function getQuery()
 
     /**
      * Required. The query against which entries in scope should be matched.
+     * The query syntax is defined in [Search syntax for Dataplex
+     * Catalog](https://cloud.google.com/dataplex/docs/search-syntax).
      *
      * Generated from protobuf field <code>string query = 2 [(.google.api.field_behavior) = REQUIRED];</code>
      * @param string $var
@@ -220,6 +238,10 @@ public function setPageToken($var)
 
     /**
      * Optional. Specifies the ordering of results.
+     * Supported values are:
+     * * `relevance` (default)
+     * * `last_modified_timestamp`
+     * * `last_modified_timestamp asc`
      *
      * Generated from protobuf field <code>string order_by = 5 [(.google.api.field_behavior) = OPTIONAL];</code>
      * @return string
@@ -231,6 +253,10 @@ public function getOrderBy()
 
     /**
      * Optional. Specifies the ordering of results.
+     * Supported values are:
+     * * `relevance` (default)
+     * * `last_modified_timestamp`
+     * * `last_modified_timestamp asc`
      *
      * Generated from protobuf field <code>string order_by = 5 [(.google.api.field_behavior) = OPTIONAL];</code>
      * @param string $var
diff --git a/Dataplex/src/V1/UpdateDataScanRequest.php b/Dataplex/src/V1/UpdateDataScanRequest.php
index 5604a49c4fcd..ba67384b005c 100644
--- a/Dataplex/src/V1/UpdateDataScanRequest.php
+++ b/Dataplex/src/V1/UpdateDataScanRequest.php
@@ -23,9 +23,9 @@ class UpdateDataScanRequest extends \Google\Protobuf\Internal\Message
      */
     protected $data_scan = null;
     /**
-     * Required. Mask of fields to update.
+     * Optional. Mask of fields to update.
      *
-     * Generated from protobuf field <code>.google.protobuf.FieldMask update_mask = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     * Generated from protobuf field <code>.google.protobuf.FieldMask update_mask = 2 [(.google.api.field_behavior) = OPTIONAL];</code>
      */
     protected $update_mask = null;
     /**
@@ -40,7 +40,7 @@ class UpdateDataScanRequest extends \Google\Protobuf\Internal\Message
      * @param \Google\Cloud\Dataplex\V1\DataScan $dataScan   Required. DataScan resource to be updated.
      *
      *                                                       Only fields specified in `update_mask` are updated.
-     * @param \Google\Protobuf\FieldMask         $updateMask Required. Mask of fields to update.
+     * @param \Google\Protobuf\FieldMask         $updateMask Optional. Mask of fields to update.
      *
      * @return \Google\Cloud\Dataplex\V1\UpdateDataScanRequest
      *
@@ -63,7 +63,7 @@ public static function build(\Google\Cloud\Dataplex\V1\DataScan $dataScan, \Goog
      *           Required. DataScan resource to be updated.
      *           Only fields specified in `update_mask` are updated.
      *     @type \Google\Protobuf\FieldMask $update_mask
-     *           Required. Mask of fields to update.
+     *           Optional. Mask of fields to update.
      *     @type bool $validate_only
      *           Optional. Only validate the request, but do not perform mutations.
      *           The default is `false`.
@@ -113,9 +113,9 @@ public function setDataScan($var)
     }
 
     /**
-     * Required. Mask of fields to update.
+     * Optional. Mask of fields to update.
      *
-     * Generated from protobuf field <code>.google.protobuf.FieldMask update_mask = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     * Generated from protobuf field <code>.google.protobuf.FieldMask update_mask = 2 [(.google.api.field_behavior) = OPTIONAL];</code>
      * @return \Google\Protobuf\FieldMask|null
      */
     public function getUpdateMask()
@@ -134,9 +134,9 @@ public function clearUpdateMask()
     }
 
     /**
-     * Required. Mask of fields to update.
+     * Optional. Mask of fields to update.
      *
-     * Generated from protobuf field <code>.google.protobuf.FieldMask update_mask = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     * Generated from protobuf field <code>.google.protobuf.FieldMask update_mask = 2 [(.google.api.field_behavior) = OPTIONAL];</code>
      * @param \Google\Protobuf\FieldMask $var
      * @return $this
      */
diff --git a/Dataplex/src/V1/UpdateEntryRequest.php b/Dataplex/src/V1/UpdateEntryRequest.php
index 7b1b52534d6f..dd74121cbcde 100644
--- a/Dataplex/src/V1/UpdateEntryRequest.php
+++ b/Dataplex/src/V1/UpdateEntryRequest.php
@@ -54,7 +54,7 @@ class UpdateEntryRequest extends \Google\Protobuf\Internal\Message
      * specified path. For example, to attach an aspect to a field that is
      * specified by the `schema` aspect, the path should have the format
      * `Schema.<field_name>`.
-     * * `<aspect_type_reference>*` - matches aspects of the given type for all
+     * * `<aspect_type_reference>&#64;*` - matches aspects of the given type for all
      * paths.
      * * `*&#64;path` - matches aspects of all types on the given path.
      * The service will not remove existing aspects matching the syntax unless
@@ -114,7 +114,7 @@ public static function build(\Google\Cloud\Dataplex\V1\Entry $entry, \Google\Pro
      *           specified path. For example, to attach an aspect to a field that is
      *           specified by the `schema` aspect, the path should have the format
      *           `Schema.<field_name>`.
-     *           * `<aspect_type_reference>*` - matches aspects of the given type for all
+     *           * `<aspect_type_reference>&#64;*` - matches aspects of the given type for all
      *           paths.
      *           * `*&#64;path` - matches aspects of all types on the given path.
      *           The service will not remove existing aspects matching the syntax unless
@@ -273,7 +273,7 @@ public function setDeleteMissingAspects($var)
      * specified path. For example, to attach an aspect to a field that is
      * specified by the `schema` aspect, the path should have the format
      * `Schema.<field_name>`.
-     * * `<aspect_type_reference>*` - matches aspects of the given type for all
+     * * `<aspect_type_reference>&#64;*` - matches aspects of the given type for all
      * paths.
      * * `*&#64;path` - matches aspects of all types on the given path.
      * The service will not remove existing aspects matching the syntax unless
@@ -298,7 +298,7 @@ public function getAspectKeys()
      * specified path. For example, to attach an aspect to a field that is
      * specified by the `schema` aspect, the path should have the format
      * `Schema.<field_name>`.
-     * * `<aspect_type_reference>*` - matches aspects of the given type for all
+     * * `<aspect_type_reference>&#64;*` - matches aspects of the given type for all
      * paths.
      * * `*&#64;path` - matches aspects of all types on the given path.
      * The service will not remove existing aspects matching the syntax unless
diff --git a/Dataplex/src/V1/resources/data_scan_service_rest_client_config.php b/Dataplex/src/V1/resources/data_scan_service_rest_client_config.php
index 416aa04726f0..160450f306df 100644
--- a/Dataplex/src/V1/resources/data_scan_service_rest_client_config.php
+++ b/Dataplex/src/V1/resources/data_scan_service_rest_client_config.php
@@ -136,9 +136,6 @@
                         ],
                     ],
                 ],
-                'queryParams' => [
-                    'update_mask',
-                ],
             ],
         ],
         'google.cloud.location.Locations' => [
diff --git a/Dataplex/tests/Unit/V1/Client/DataScanServiceClientTest.php b/Dataplex/tests/Unit/V1/Client/DataScanServiceClientTest.php
index 6fa6771eea7c..e491e9a3baee 100644
--- a/Dataplex/tests/Unit/V1/Client/DataScanServiceClientTest.php
+++ b/Dataplex/tests/Unit/V1/Client/DataScanServiceClientTest.php
@@ -56,7 +56,6 @@
 use Google\LongRunning\GetOperationRequest;
 use Google\LongRunning\Operation;
 use Google\Protobuf\Any;
-use Google\Protobuf\FieldMask;
 use Google\Protobuf\GPBEmpty;
 use Google\Rpc\Code;
 use stdClass;
@@ -810,8 +809,7 @@ public function updateDataScanTest()
         $dataScan = new DataScan();
         $dataScanData = new DataSource();
         $dataScan->setData($dataScanData);
-        $updateMask = new FieldMask();
-        $request = (new UpdateDataScanRequest())->setDataScan($dataScan)->setUpdateMask($updateMask);
+        $request = (new UpdateDataScanRequest())->setDataScan($dataScan);
         $response = $gapicClient->updateDataScan($request);
         $this->assertFalse($response->isDone());
         $this->assertNull($response->getResult());
@@ -824,8 +822,6 @@ public function updateDataScanTest()
         $this->assertSame('/google.cloud.dataplex.v1.DataScanService/UpdateDataScan', $actualApiFuncCall);
         $actualValue = $actualApiRequestObject->getDataScan();
         $this->assertProtobufEquals($dataScan, $actualValue);
-        $actualValue = $actualApiRequestObject->getUpdateMask();
-        $this->assertProtobufEquals($updateMask, $actualValue);
         $expectedOperationsRequestObject = new GetOperationRequest();
         $expectedOperationsRequestObject->setName('operations/updateDataScanTest');
         $response->pollUntilComplete([
@@ -883,8 +879,7 @@ public function updateDataScanExceptionTest()
         $dataScan = new DataScan();
         $dataScanData = new DataSource();
         $dataScan->setData($dataScanData);
-        $updateMask = new FieldMask();
-        $request = (new UpdateDataScanRequest())->setDataScan($dataScan)->setUpdateMask($updateMask);
+        $request = (new UpdateDataScanRequest())->setDataScan($dataScan);
         $response = $gapicClient->updateDataScan($request);
         $this->assertFalse($response->isDone());
         $this->assertNull($response->getResult());