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Change Status service

Change Status provides a means to keep track of which resources have changed within an account over a given time period. This is a sort of "summary" view for the complete field-by-field results of the Change Event service.

This can be used to get a snapshot of all the resources that have changed in a given timeframe. That can then be used to sync local values in your database, for example.

Change Status types

The Change Service currently tracks changes for the following resource types:

Resource type Value Resource type ID
Ad group AD_GROUP 2
Ad group ad AD_GROUP_AD 3
Ad group bid modifier AD_GROUP_BID_MODIFIER 11
Ad group criterion AD_GROUP_CRITERION 4
Ad group feed AD_GROUP_FEED 12
Campaign CAMPAIGN 5
Campaign criterion CAMPAIGN_CRITERION 6
Campaign feed CAMPAIGN_FEED 9
Feed FEED 8
Feed item FEED_ITEM 10

Tracking of additional resource types are planned for future releases.

Determining resource type by ID

The Google Ads API may return rows with an UNKNOWN resource type value for older API versions. This means that the type is supported in a future version of the Google Ads API, but was not fully supported at the time that your current version was released.

When this happens, you can still determine the resource type of the row by parsing the returned resource_name.

The resource name format is:

customers/{customer_id}/changeStatus/{timestamp}-{resource_type_id}-{additional_ids}

There could be one or more additional IDs, separated by the - character, but the one that is relevant here is the resource_type_id, the second ID after the final slash. See the table above for a complete list of resource type IDs.

Getting changes

The list of changes can be filtered by date as well as by resource type. The operation on a given resource will be one of ADDED, CHANGED, or REMOVED.

You can retrieve the list of all changes for all resource types. The returned resource_type is the field that changed. Any parent fields are also populated. For example, if the ad_group_criterion changed, then the ad_group field will also be populated.

The query must filter on date within the past 90 days (and optionally time), and must include a LIMIT clause set to at most 10,000 results.

Java

private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
  String query =
      "SELECT change_status.resource_name, "
          + "change_status.last_change_date_time, "
          + "change_status.resource_status, "
          + "change_status.resource_type, "
          + "change_status.ad_group, "
          + "change_status.ad_group_ad, "
          + "change_status.ad_group_bid_modifier, "
          + "change_status.ad_group_criterion, "
          + "change_status.ad_group_feed, "
          + "change_status.campaign, "
          + "change_status.campaign_criterion, "
          + "change_status.campaign_feed, "
          + "change_status.feed, "
          + "change_status.feed_item "
          + "FROM change_status "
          + "WHERE change_status.last_change_date_time DURING LAST_14_DAYS "
          + "ORDER BY change_status.last_change_date_time "
          + "LIMIT 10000";

  try (GoogleAdsServiceClient client =
      googleAdsClient.getLatestVersion().createGoogleAdsServiceClient()) {
    SearchPagedResponse response = client.search(String.valueOf(customerId), query);

    for (GoogleAdsRow row : response.iterateAll()) {
      Optional<String> resourceNameOfChangedEntity =
          getResourceNameForResourceType(row.getChangeStatus());

      System.out.printf(
          "On '%s', change status '%s' shows a resource type of '%s' "
              + "with resource name '%s' was '%s'.%n",
          row.getChangeStatus().getLastChangeDateTime(),
          row.getChangeStatus().getResourceName(),
          row.getChangeStatus().getResourceType().name(),
          resourceNameOfChangedEntity.orElse(""),
          row.getChangeStatus().getResourceStatus().name());
    }
  }
}
      

C#

public void Run(GoogleAdsClient client, long customerId)
{
    // Get the GoogleAdsService.
    GoogleAdsServiceClient googleAdsService = client.GetService(
        Services.V8.GoogleAdsService);

    string searchQuery = @"
        SELECT
            change_status.resource_name,
            change_status.last_change_date_time,
            change_status.resource_type,
            change_status.campaign,
            change_status.ad_group,
            change_status.resource_status,
            change_status.ad_group_ad,
            change_status.ad_group_criterion,
            change_status.campaign_criterion
        FROM change_status
        WHERE
            change_status.last_change_date_time DURING LAST_14_DAYS
        ORDER BY change_status.last_change_date_time
        LIMIT 10000";

    // Create a request that will retrieve all changes using pages of the specified
    // page size.
    SearchGoogleAdsRequest request = new SearchGoogleAdsRequest()
    {
        PageSize = PAGE_SIZE,
        Query = searchQuery,
        CustomerId = customerId.ToString()
    };

    try
    {
        // Issue the search request.
        PagedEnumerable<SearchGoogleAdsResponse, GoogleAdsRow> searchPagedResponse =
            googleAdsService.Search(request);

        // Iterate over all rows in all pages and prints the requested field values for the
        // campaign in each row.
        foreach (GoogleAdsRow googleAdsRow in searchPagedResponse)
        {
            Console.WriteLine("Last change: {0}, Resource type: {1}, " +
                "Resource name: {2}, Resource status: {3}, Specific resource name: {4}",
                googleAdsRow.ChangeStatus.LastChangeDateTime,
                googleAdsRow.ChangeStatus.ResourceType,
                googleAdsRow.ChangeStatus.ResourceName,
                googleAdsRow.ChangeStatus.ResourceStatus,
                SpecificResourceName(googleAdsRow.ChangeStatus.ResourceType,
                    googleAdsRow));
        }
    }
    catch (GoogleAdsException e)
    {
        Console.WriteLine("Failure:");
        Console.WriteLine($"Message: {e.Message}");
        Console.WriteLine($"Failure: {e.Failure}");
        Console.WriteLine($"Request ID: {e.RequestId}");
        throw;
    }
}

/// <summary>
/// Return the name of the most specific resource that changed.
/// </summary>
/// <param name="resourceType">Type of the resource.</param>
/// <param name="row">Each returned row contains all possible changed fields</param>
/// <returns>The resource name of the changed field based on the resource type.
/// The changed field's parent is also populated, but is not used.</returns>
private string SpecificResourceName(ChangeStatusResourceType resourceType, GoogleAdsRow row)
{
    string resourceName;
    switch (resourceType)
    {
        case ChangeStatusResourceType.AdGroup:
            resourceName = row.ChangeStatus.AdGroup;
            break;

        case ChangeStatusResourceType.AdGroupAd:
            resourceName = row.ChangeStatus.AdGroupAd;
            break;

        case ChangeStatusResourceType.AdGroupCriterion:
            resourceName = row.ChangeStatus.AdGroupCriterion;
            break;

        case ChangeStatusResourceType.Campaign:
            resourceName = row.ChangeStatus.Campaign;
            break;

        case ChangeStatusResourceType.CampaignCriterion:
            resourceName = row.ChangeStatus.CampaignCriterion;
            break;

        case ChangeStatusResourceType.Unknown:
        case ChangeStatusResourceType.Unspecified:
        default:
            resourceName = "";
            break;
    }
    return resourceName;
}
      

PHP

public static function runExample(GoogleAdsClient $googleAdsClient, int $customerId)
{
    $googleAdsServiceClient = $googleAdsClient->getGoogleAdsServiceClient();
    // Creates a query to find information about changed resources in your account.
    $query = 'SELECT change_status.resource_name, '
        . 'change_status.last_change_date_time, '
        . 'change_status.resource_status, '
        . 'change_status.resource_type, '
        . 'change_status.ad_group, '
        . 'change_status.ad_group_ad, '
        . 'change_status.ad_group_bid_modifier, '
        . 'change_status.ad_group_criterion, '
        . 'change_status.ad_group_feed, '
        . 'change_status.campaign, '
        . 'change_status.campaign_criterion, '
        . 'change_status.campaign_feed, '
        . 'change_status.feed, '
        . 'change_status.feed_item '
        . 'FROM change_status '
        . 'WHERE change_status.last_change_date_time DURING LAST_14_DAYS '
        . 'ORDER BY change_status.last_change_date_time '
        . 'LIMIT 10000';

    // Issues a search request by specifying page size.
    $response =
        $googleAdsServiceClient->search($customerId, $query, ['pageSize' => self::PAGE_SIZE]);

    // Iterates over all rows in all pages and prints the requested field values for
    // the change status in each row.
    foreach ($response->iterateAllElements() as $googleAdsRow) {
        /** @var GoogleAdsRow $googleAdsRow */
        printf(
            "On %s, change status '%s' shows resource '%s' with type '%s' and status '%s'.%s",
            $googleAdsRow->getChangeStatus()->getLastChangeDateTime(),
            $googleAdsRow->getChangeStatus()->getResourceName(),
            self::getResourceNameForResourceType($googleAdsRow->getChangeStatus()),
            ChangeStatusResourceType::name(
                $googleAdsRow->getChangeStatus()->getResourceType()
            ),
            ChangeStatusOperation::name($googleAdsRow->getChangeStatus()->getResourceStatus()),
            PHP_EOL
        );
    }
}

/**
 * Gets the resource name for the resource type of the change status object.
 *
 * Each returned row contains all possible changed resources, only one of which is populated
 * with the name of the changed resource. This function returns the resource name of the
 * changed resource based on the resource type.
 *
 * @param ChangeStatus $changeStatus the change status object for getting changed resource
 * @return string the name of the resource that changed
 */
private static function getResourceNameForResourceType(
    ChangeStatus $changeStatus
) {
    $resourceType = $changeStatus->getResourceType();
    $resourceName = ''; // Default value for UNSPECIFIED or UNKNOWN resource type.
    switch ($resourceType) {
        case ChangeStatusResourceType::AD_GROUP:
            $resourceName = $changeStatus->getAdGroup();
            break;
        case ChangeStatusResourceType::AD_GROUP_AD:
            $resourceName = $changeStatus->getAdGroupAd();
            break;
        case ChangeStatusResourceType::AD_GROUP_BID_MODIFIER:
            $resourceName = $changeStatus->getAdGroupBidModifier();
            break;
        case ChangeStatusResourceType::AD_GROUP_CRITERION:
            $resourceName = $changeStatus->getAdGroupCriterion();
            break;
        case ChangeStatusResourceType::AD_GROUP_FEED:
            $resourceName = $changeStatus->getAdGroupFeed();
            break;
        case ChangeStatusResourceType::CAMPAIGN:
            $resourceName = $changeStatus->getCampaign();
            break;
        case ChangeStatusResourceType::CAMPAIGN_CRITERION:
            $resourceName = $changeStatus->getCampaignCriterion();
            break;
        case ChangeStatusResourceType::CAMPAIGN_FEED:
            $resourceName = $changeStatus->getCampaignFeed();
            break;
        case ChangeStatusResourceType::FEED:
            $resourceName = $changeStatus->getFeed();
            break;
        case ChangeStatusResourceType::FEED_ITEM:
            $resourceName = $changeStatus->getFeedItem();
            break;
    }

    return $resourceName;
}
      

Python

def main(client, customer_id):
    ads_service = client.get_service("GoogleAdsService")

    # Construct a query to find information about changed resources in your
    # account.
    query = """
        SELECT
          change_status.resource_name,
          change_status.last_change_date_time,
          change_status.resource_type,
          change_status.campaign,
          change_status.ad_group,
          change_status.resource_status,
          change_status.ad_group_ad,
          change_status.ad_group_criterion,
          change_status.campaign_criterion
        FROM change_status
        WHERE change_status.last_change_date_time DURING LAST_14_DAYS
        ORDER BY change_status.last_change_date_time
        LIMIT 10000"""

    search_request = client.get_type("SearchGoogleAdsRequest")
    search_request.customer_id = customer_id
    search_request.query = query
    search_request.page_size = _DEFAULT_PAGE_SIZE

    response = ads_service.search(request=search_request)

    for row in response:
        cs = row.change_status
        resource_type = cs.resource_type.name
        if resource_type == "AD_GROUP":
            resource_name = cs.ad_group
        if resource_type == "AD_GROUP_AD":
            resource_name = cs.ad_group_ad
        if resource_type == "AD_GROUP_CRITERION":
            resource_name = cs.ad_group_criterion
        if resource_type == "CAMPAIGN":
            resource_name = cs.campaign
        if resource_type == "CAMPAIGN_CRITERION":
            resource_name = cs.campaign_criterion
        else:
            resource_name = "UNKNOWN"

        resource_status = cs.resource_status.name
        print(
            f"On '{cs.last_change_date_time}', change status "
            f"'{cs.resource_name}' shows that a resource type of "
            f"'{resource_type}' with resource name '{resource_name}' was "
            f"{resource_status}"
        )
      

Ruby

def get_change_summary(customer_id)
  # GoogleAdsClient will read a config file from
  # ENV['HOME']/google_ads_config.rb when called without parameters
  client = Google::Ads::GoogleAds::GoogleAdsClient.new

  # Construct a query to find information about changed resources in your
  # account.
  query = <<~QUERY
    SELECT
      change_status.resource_name,
      change_status.last_change_date_time,
      change_status.resource_type,
      change_status.campaign,
      change_status.ad_group,
      change_status.resource_status,
      change_status.ad_group_ad,
      change_status.ad_group_criterion,
      change_status.campaign_criterion
    FROM
      change_status
    WHERE change_status.last_change_date_time DURING LAST_14_DAYS
    ORDER BY
      change_status.last_change_date_time
    LIMIT 10000
  QUERY

  # Execute the query.
  response = client.service.google_ads.search(
    customer_id: customer_id,
    query: query,
    page_size: PAGE_SIZE
  )

  # Process the results.
  response.each do |row|
    cs = row.change_status
    resource_name = case cs.resource_type
    when :AD_GROUP
      cs.ad_group
    when :AD_GROUP_AD
      cs.ad_group_ad
    when :AD_GROUP_CRITERION
      cs.ad_group_criterion
    when :CAMPAIGN
      cs.campaign
    when :CAMPAIGN_CRITERION
      cs.campaign_criterion
    else
      "UNKNOWN"
    end
    puts "On #{cs.last_change_date_time}, change status #{cs.resource_name} " \
         "shows a resource type of #{cs.resource_type} " \
         "with resource name #{resource_name} was #{cs.resource_status}."
  end
end
      

Perl

sub get_change_summary {
  my ($api_client, $customer_id) = @_;

  # Construct a search query to find information about changed resources in your
  # account.
  my $search_query =
    "SELECT change_status.resource_name, change_status.last_change_date_time, "
    . "change_status.resource_status, "
    . "change_status.resource_type, "
    . "change_status.ad_group, "
    . "change_status.ad_group_ad, "
    . "change_status.ad_group_bid_modifier, "
    . "change_status.ad_group_criterion, "
    . "change_status.ad_group_feed, "
    . "change_status.campaign, "
    . "change_status.campaign_criterion, "
    . "change_status.campaign_feed, "
    . "change_status.feed, "
    . "change_status.feed_item "
    . "FROM change_status "
    . "WHERE change_status.last_change_date_time DURING LAST_14_DAYS "
    . "ORDER BY change_status.last_change_date_time "
    . "LIMIT 10000";

  # Create a search Google Ads request that will retrieve all change statuses using
  # pages of the specified page size.
  my $search_request =
    Google::Ads::GoogleAds::V8::Services::GoogleAdsService::SearchGoogleAdsRequest
    ->new({
      customerId => $customer_id,
      query      => $search_query,
      pageSize   => PAGE_SIZE
    });

  # Get the GoogleAdsService.
  my $google_ads_service = $api_client->GoogleAdsService();

  my $iterator = Google::Ads::GoogleAds::Utils::SearchGoogleAdsIterator->new({
    service => $google_ads_service,
    request => $search_request
  });

  # Iterate over all rows in all pages and print the requested field values for
  # the change status in each row.
  while ($iterator->has_next) {
    my $google_ads_row = $iterator->next;

    my $change_status = $google_ads_row->{changeStatus};

    printf "On %s, change status '%s' shows a resource type of '%s' " .
      "with resource name '%s' was '%s'.\n",
      $change_status->{lastChangeDateTime},
      $change_status->{resourceName}, $change_status->{resourceType},
      __get_resource_name_for_resource_type($change_status),
      $change_status->{resourceStatus};
  }

  return 1;
}

# This method returns the resource name of the changed field based on the
# resource type. The changed field's parent is also populated but is not used.
sub __get_resource_name_for_resource_type {
  my $change_status = shift;
  my $resource_type = $change_status->{resourceType};
  if ($resource_type eq AD_GROUP) {
    return $change_status->{adGroup};
  } elsif ($resource_type eq AD_GROUP_AD) {
    return $change_status->{adGroupAd};
  } elsif ($resource_type eq AD_GROUP_BID_MODIFIER) {
    return $change_status->{adGroupBidModifier};
  } elsif ($resource_type eq AD_GROUP_CRITERION) {
    return $change_status->{adGroupCriterion};
  } elsif ($resource_type eq AD_GROUP_FEED) {
    return $change_status->{adGroupFeed};
  } elsif ($resource_type eq CAMPAIGN) {
    return $change_status->{campaign};
  } elsif ($resource_type eq CAMPAIGN_CRITERION) {
    return $change_status->{campaignCriterion};
  } elsif ($resource_type eq CAMPAIGN_FEED) {
    return $change_status->{campaignFeed};
  } elsif ($resource_type eq FEED) {
    return $change_status->{feed};
  } elsif ($resource_type eq FEED_ITEM) {
    return $change_status->{feedItem};
  } else {
    return "";
  }
}
      

Keeping synchronized locally

Once the precise resource_name is retrieved, a new query with this resource name should be made to obtain all the current values of the resource. The Change Status Service does not track the specific resource's values that changed—only which resources changed. Determining the difference between the prior and current values is the responsibility of the calling program.

Checking a resource's change time

The service provides the last_change_date_time field to indicate when the most recent change to any given resource occurred. Thus, the freshness of locally cached data can be compared with this field's value to help determine whether local data is out of date.

Note that this field is also filterable, meaning it can be used in the WHERE clause of a Google Ads Query Language (GAQL) query. This enables the ability to query for changes in resources that have occurred before or after a given time.

For example, finding all changes that have occurred for a certain resource type within the last week can be accomplished with a GAQL predicate clause like:

... WHERE change_status.last_change_date_time DURING LAST_7_DAYS