Merchant API code sample to update checkout settings.

### Java

    // Copyright 2025 Google LLC

    // Licensed under the Apache License, Version 2.0 (the "License");
    // you may not use this file except in compliance with the License.
    // You may obtain a copy of the License at
    //
    //     https://www.apache.org/licenses/LICENSE-2.0
    //
    // Unless required by applicable law or agreed to in writing, software
    // distributed under the License is distributed on an "AS IS" BASIS,
    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    // See the License for the specific language governing permissions and
    // limitations under the License.
    package shopping.merchant.samples.accounts.checkoutsettings.v1;

    import com.google.api.gax.core.FixedCredentialsProvider;
    import com.google.auth.oauth2.GoogleCredentials;
    import com.google.protobuf.FieldMask;
    import com.google.shopping.merchant.accounts.v1.CheckoutSettings;
    import com.google.shopping.merchant.accounts.v1.CheckoutSettingsName;
    import com.google.shopping.merchant.accounts.v1.CheckoutSettingsServiceClient;
    import com.google.shopping.merchant.accounts.v1.CheckoutSettingsServiceSettings;
    import com.google.shopping.merchant.accounts.v1.UpdateCheckoutSettingsRequest;
    import com.google.shopping.merchant.accounts.v1.UriSettings;
    import com.google.shopping.type.Destination.DestinationEnum;
    import shopping.merchant.samples.utils.Authenticator;
    import shopping.merchant.samples.utils.Config;

    /**
     * This class demonstrates how to update the checkout settings for a given Merchant Center account
     */
    public class UpdateCheckoutSettingsSample {
      public static void updateBusinessInfo(Config config) throws Exception {
        // Obtains OAuth token based on the user's configuration.
        GoogleCredentials credential = new Authenticator().authenticate();

        // Creates service settings using the credentials retrieved above.
        CheckoutSettingsServiceSettings checkoutSettingsServiceSettings =
            CheckoutSettingsServiceSettings.newBuilder()
                .setCredentialsProvider(FixedCredentialsProvider.create(credential))
                .build();
        try (CheckoutSettingsServiceClient checkoutSettingsServiceClient =
            CheckoutSettingsServiceClient.create(checkoutSettingsServiceSettings)) {
          String accountId = config.getAccountId().toString();
          // The only valid programId for checkout settings is "checkout"
          String programId = "checkout";
          String name =
              CheckoutSettingsName.newBuilder()
                  .setAccount(accountId)
                  .setProgram(programId)
                  .build()
                  .toString();
          // Replace this with your checkout URL.
          String checkoutUrl = "https://myshopify.com/cart/1234:1";
          CheckoutSettings checkoutSettings =
              CheckoutSettings.newBuilder()
                  .setName(name)
                  .setUriSettings(UriSettings.newBuilder().setCheckoutUriTemplate(checkoutUrl))
                  .addEligibleDestinations(DestinationEnum.SHOPPING_ADS)
                  .build();
          FieldMask fieldMask =
              FieldMask.newBuilder().addPaths("uri_settings").addPaths("eligible_destinations").build();
          UpdateCheckoutSettingsRequest request =
              UpdateCheckoutSettingsRequest.newBuilder()
                  .setCheckoutSettings(checkoutSettings)
                  .setUpdateMask(fieldMask)
                  .build();

          System.out.println("Sending update checkoutSettings request:");
          CheckoutSettings response = checkoutSettingsServiceClient.updateCheckoutSettings(request);

          System.out.println("Updated Checkout Settings below:");
          System.out.println(response);
        } catch (Exception e) {
          System.out.println("An error has occurred: ");
          System.out.println(e);
        }
      }

      public static void main(String[] args) throws Exception {
        Config config = Config.load();

        updateBusinessInfo(config);
      }
    }

### PHP


    <?php
    /**
     * Copyright 2025 Google LLC
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     *     https://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    require_once __DIR__ . '/../../../../vendor/autoload.php';
    require_once __DIR__ . '/../../../Authentication/Authentication.php';
    require_once __DIR__ . '/../../../Authentication/Config.php';

    use Google\ApiCore\ApiException;
    use Google\Protobuf\FieldMask;
    use Google\Shopping\Merchant\Accounts\V1\CheckoutSettings;
    use Google\Shopping\Merchant\Accounts\V1\Client\CheckoutSettingsServiceClient;
    use Google\Shopping\Merchant\Accounts\V1\UpdateCheckoutSettingsRequest;
    use Google\Shopping\Merchant\Accounts\V1\UriSettings;
    use Google\Shopping\Type\Destination\DestinationEnum;

    /**
     * This class demonstrates how to update the checkout settings for a given
     * Merchant Center account.
     */
    class UpdateCheckoutSettingsSample
    {
        /**
         * Updates the checkout settings for a given Merchant Center account.
         *
         * @param array $config The configuration file for the Merchant Center account.
         *
         * @return void
         */
        public static function updateCheckoutSettings(array $config): void
        {
            // Obtains OAuth credentials from the configuration file.
            $credentials = Authentication::useServiceAccountOrTokenFile();

            // Creates a client.
            $checkoutSettingsServiceClient = new CheckoutSettingsServiceClient([
                'credentials' => $credentials
            ]);

            // The only valid programId for checkout settings is "checkout".
            $programId = 'checkout';

            // Constructs the resource name format:
            // `accounts/{account}/programs/{program}/checkoutSettings`.
            $name = sprintf(
                'accounts/%s/programs/%s/checkoutSettings',
                $config['accountId'],
                $programId
            );

            // Replace this with your checkout URL.
            $checkoutUrl = 'https://myshopify.com/cart/1234:1';

            // Creates the URI settings with the checkout URL.
            $uriSettings = new UriSettings([
                'checkout_uri_template' => $checkoutUrl
            ]);

            // Creates the checkout settings with the name, URI settings, and
            // eligible destinations. The name is required for an update.
            $checkoutSettings = new CheckoutSettings([
                'name' => $name,
                'uri_settings' => $uriSettings,
                'eligible_destinations' => [DestinationEnum::SHOPPING_ADS]
            ]);

            // Creates a field mask to specify which fields to update.
            $fieldMask = new FieldMask([
                'paths' => ['uri_settings', 'eligible_destinations']
            ]);

            // Creates the request object.
            $request = (new UpdateCheckoutSettingsRequest())
                ->setCheckoutSettings($checkoutSettings)
                ->setUpdateMask($fieldMask);

            // Calls the API and catches and prints any network failures/errors.
            try {
                printf("Sending update checkoutSettings request:%s", PHP_EOL);
                $response = $checkoutSettingsServiceClient->updateCheckoutSettings($request);
                printf("Updated Checkout Settings below:%s", PHP_EOL);
                print $response->serializeToJsonString(true) . PHP_EOL;
            } catch (ApiException $e) {
                printf("An error has occurred: %s", PHP_EOL);
                print $e->getMessage();
            }
        }

        /**
         * Executes the sample.
         *
         * @return void
         */
        public function callSample(): void
        {
            $config = Config::generateConfig();
            self::updateCheckoutSettings($config);
        }
    }

    // Runs the sample.
    $sample = new UpdateCheckoutSettingsSample();
    $sample->callSample();