--- title: HOW TO ADD A SUPPLEMENTAL FEED TO GOOGLE MERCHANT CENTER description: To use a supplementary feed in the Merchant Center Next from Shopping Booster, you can either revert to the old Merchant Center or follow this guide to add the option of using supplement feeds --- [Skip to content](https://knowledge.profitmetrics.io/how-to-add-a-supplemental-feed-to-google-merchant-center#main-content) [![ProfitMetrics logo black version](https://knowledge.profitmetrics.io/hs-fs/hubfs/pm_logotype_blue.png?width=193&height=28&name=pm_logotype_blue.png)](https://knowledge.profitmetrics.io/?hsLang=en) Open main navigation Close main navigation - [Contact Support](https://knowledge.profitmetrics.io/kb-ticket/new) [Contact Support](https://knowledge.profitmetrics.io/kb-ticket/new?hsLang=en) How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge base](https://knowledge.profitmetrics.io/?hsLang=en) 2. [Shopping Booster](https://knowledge.profitmetrics.io/shopping-booster?hsLang=en) 3. [Supplemental Feeds](https://knowledge.profitmetrics.io/shopping-booster?hsLang=en#supplemental-feeds) # HOW TO ADD A SUPPLEMENTAL FEED TO GOOGLE MERCHANT CENTER ## To use a supplementary feed in the Merchant Center from Shopping Booster, you can follow this guide to add the supplemental feeds.   **Important**: Make sure to set up the Shopping Booster before following these steps.  1. Log in to [https://merchants.google.com/](https://merchants.google.com/) 2. Confirm you are on the correct account! 3. Click **"Settings"**   **![Screenshot 2026-05-20 at 13.35.44](https://knowledge.profitmetrics.io/hs-fs/hubfs/Screenshot%202026-05-20%20at%2013.35.44.png?width=670&height=384&name=Screenshot%202026-05-20%20at%2013.35.44.png)** 4. Click **"Add-ons"** **![Screenshot 2026-05-20 at 13.36.16](https://knowledge.profitmetrics.io/hs-fs/hubfs/Screenshot%202026-05-20%20at%2013.36.16.png?width=670&height=380&name=Screenshot%202026-05-20%20at%2013.36.16.png)** 5. Under Advanced data source management, select **"Add" ![](https://knowledge.profitmetrics.io/hs-fs/hubfs/Google%20Chrome%20Workflow%20-%20Step%203-png.png?width=670&height=374&name=Google%20Chrome%20Workflow%20-%20Step%203-png.png)** 6. Click **"Add"**![](https://knowledge.profitmetrics.io/hs-fs/hubfs/Google%20Chrome%20Workflow%20-%20Step%204-png.png?width=670&height=374&name=Google%20Chrome%20Workflow%20-%20Step%204-png.png) 7. Now supplemental feeds will be available. Go to **"Data sources" ![Screenshot 2026-05-20 at 13.38.44](https://knowledge.profitmetrics.io/hs-fs/hubfs/Screenshot%202026-05-20%20at%2013.38.44.png?width=670&height=383&name=Screenshot%202026-05-20%20at%2013.38.44.png)** 8. Click the **"Supplemental sources"** tab   ![Screenshot 2026-05-20 at 13.38.57](https://knowledge.profitmetrics.io/hs-fs/hubfs/Screenshot%202026-05-20%20at%2013.38.57.png?width=670&height=385&name=Screenshot%202026-05-20%20at%2013.38.57.png) 9. Click **"Add supplemental product data"** **![](https://knowledge.profitmetrics.io/hs-fs/hubfs/Google%20Chrome%20Workflow%20-%20Step%209-png.png?width=670&height=374&name=Google%20Chrome%20Workflow%20-%20Step%209-png.png)** 1. Insert the file URL from the Shopping Booster in ProfitMetrics ![Screenshot 2026-05-20 at 13.42.06](https://knowledge.profitmetrics.io/hs-fs/hubfs/Screenshot%202026-05-20%20at%2013.42.06.png?width=670&height=378&name=Screenshot%202026-05-20%20at%2013.42.06.png) Click to add the username and password to authenticate the feed: **![Screenshot 2026-05-20 at 13.42.16](https://knowledge.profitmetrics.io/hs-fs/hubfs/Screenshot%202026-05-20%20at%2013.42.16.png?width=670&height=383&name=Screenshot%202026-05-20%20at%2013.42.16.png)** 2. Scroll down to HTTP authentication.You can find these credentials in ProfitMetrics under Shopping Booster settings. ![How to Create a Supplemental Feed for PM Shopping Booster - Step 9](https://knowledge.profitmetrics.io/hs-fs/hubfs/How%20to%20Create%20a%20Supplemental%20Feed%20for%20PM%20Shopping%20Booster%20-%20Step%209.png?width=670&height=283&name=How%20to%20Create%20a%20Supplemental%20Feed%20for%20PM%20Shopping%20Booster%20-%20Step%209.png) After authenticating click '**continue**' 3. Choose **all or only the specific languages** where this feed should apply. ![How to Create a Supplemental Feed for PM Shopping Booster - Step 10](https://knowledge.profitmetrics.io/hs-fs/hubfs/How%20to%20Create%20a%20Supplemental%20Feed%20for%20PM%20Shopping%20Booster%20-%20Step%2010.png?width=670&height=375&name=How%20to%20Create%20a%20Supplemental%20Feed%20for%20PM%20Shopping%20Booster%20-%20Step%2010.png) 4. Click "**Create feed**" - You will now see your supplemental feed in the overview. ![How to Create a Supplemental Feed for PM Shopping Booster - Step 11](https://knowledge.profitmetrics.io/hs-fs/hubfs/How%20to%20Create%20a%20Supplemental%20Feed%20for%20PM%20Shopping%20Booster%20-%20Step%2011.png?width=670&height=376&name=How%20to%20Create%20a%20Supplemental%20Feed%20for%20PM%20Shopping%20Booster%20-%20Step%2011.png) 5. Navigate to your new supplemental feed and click "**Update**". ![Screenshot 2026-05-20 at 13.47.03](https://knowledge.profitmetrics.io/hs-fs/hubfs/Screenshot%202026-05-20%20at%2013.47.03.png?width=670&height=299&name=Screenshot%202026-05-20%20at%2013.47.03.png) 6. Your supplemental feed will be processed and added to your products. The new updated Custom Columns will not be visible within Google Ads before the next sync *which can take up to 24 hours after you fetched the feed.* - [Getting Started](https://knowledge.profitmetrics.io/getting-started?hsLang=en#main-content) - [Learn the Basics](https://knowledge.profitmetrics.io/getting-started?hsLang=en#learn-the-basics) - [Prepare for Onboarding](https://knowledge.profitmetrics.io/getting-started?hsLang=en#prepare-for-onboarding) - [Account Setup](https://knowledge.profitmetrics.io/getting-started?hsLang=en#account-setup) - [E-commerce Platforms](https://knowledge.profitmetrics.io/e-commerce-platforms?hsLang=en#main-content) - [Shopify](https://knowledge.profitmetrics.io/e-commerce-platforms?hsLang=en#shopify) - [WooCommerce](https://knowledge.profitmetrics.io/e-commerce-platforms?hsLang=en#woocommerce) - [Magento](https://knowledge.profitmetrics.io/e-commerce-platforms?hsLang=en#magento) - [PrestaShop](https://knowledge.profitmetrics.io/e-commerce-platforms?hsLang=en#prestashop) - [BigCommerce](https://knowledge.profitmetrics.io/e-commerce-platforms?hsLang=en#bigcommerce) - [Shopware](https://knowledge.profitmetrics.io/e-commerce-platforms?hsLang=en#shopware) - [DanDomain & Related](https://knowledge.profitmetrics.io/e-commerce-platforms?hsLang=en#dandomain-related) - [Universal Integration (Clientside)](https://knowledge.profitmetrics.io/e-commerce-platforms?hsLang=en#universal-integration-clientside) - [Universal Integration (Server-side Hybrid)](https://knowledge.profitmetrics.io/e-commerce-platforms?hsLang=en#universal-integration-server-side-hybrid) - [Other Platforms](https://knowledge.profitmetrics.io/e-commerce-platforms?hsLang=en#other-platforms) - [Developer Documentation](https://knowledge.profitmetrics.io/e-commerce-platforms?hsLang=en#developer-documentation) - [Ad Channels](https://knowledge.profitmetrics.io/ad-channels?hsLang=en#main-content) - [Google Ads](https://knowledge.profitmetrics.io/ad-channels?hsLang=en#google-ads) - [Meta (Facebook/Instagram)](https://knowledge.profitmetrics.io/ad-channels?hsLang=en#meta-facebook-instagram) - [Microsoft Bing Ads](https://knowledge.profitmetrics.io/ad-channels?hsLang=en#microsoft-bing-ads) - [Google Analytics 4](https://knowledge.profitmetrics.io/ad-channels?hsLang=en#google-analytics-4) - [Partner-ads](https://knowledge.profitmetrics.io/ad-channels?hsLang=en#partner-ads) - [Other Channel Configuration](https://knowledge.profitmetrics.io/ad-channels?hsLang=en#other-channel-configuration) - [Tracking & Conversion Setup](https://knowledge.profitmetrics.io/tracking-conversion-setup?hsLang=en#main-content) - [Overview](https://knowledge.profitmetrics.io/tracking-conversion-setup?hsLang=en#overview) - [Conversion Booster for Google Ads](https://knowledge.profitmetrics.io/tracking-conversion-setup?hsLang=en#conversion-booster-for-google-ads) - [Conversion Booster for Meta](https://knowledge.profitmetrics.io/tracking-conversion-setup?hsLang=en#conversion-booster-for-meta) - [Conversion Booster Custom Pixels](https://knowledge.profitmetrics.io/tracking-conversion-setup?hsLang=en#conversion-booster-custom-pixels) - [Enhanced Conversions](https://knowledge.profitmetrics.io/tracking-conversion-setup?hsLang=en#enhanced-conversions) - [Shopping Booster](https://knowledge.profitmetrics.io/shopping-booster?hsLang=en#main-content) - [Overview & Setup](https://knowledge.profitmetrics.io/shopping-booster?hsLang=en#overview-setup) - [Supplemental Feeds](https://knowledge.profitmetrics.io/shopping-booster?hsLang=en#supplemental-feeds) - [Campaigns & Labels](https://knowledge.profitmetrics.io/shopping-booster?hsLang=en#campaigns-labels) - [Troubleshooting](https://knowledge.profitmetrics.io/shopping-booster?hsLang=en#troubleshooting) - [Product Feed & Costs](https://knowledge.profitmetrics.io/product-feed-costs?hsLang=en#main-content) - [Product Feed](https://knowledge.profitmetrics.io/product-feed-costs?hsLang=en#product-feed) - [Shipping & Payment Costs](https://knowledge.profitmetrics.io/product-feed-costs?hsLang=en#shipping-payment-costs) - [Expenses](https://knowledge.profitmetrics.io/product-feed-costs?hsLang=en#expenses) - [Dashboard, Orders & Reporting](https://knowledge.profitmetrics.io/dashboard-orders-reporting?hsLang=en#main-content) - [Dashboard & Orders](https://knowledge.profitmetrics.io/dashboard-orders-reporting?hsLang=en#dashboard-orders) - [Looker Studio](https://knowledge.profitmetrics.io/dashboard-orders-reporting?hsLang=en#looker-studio) - [Google BigQuery](https://knowledge.profitmetrics.io/dashboard-orders-reporting?hsLang=en#google-bigquery) - [Account & Billing](https://knowledge.profitmetrics.io/account-billing?hsLang=en#main-content) - [Users & Access](https://knowledge.profitmetrics.io/account-billing?hsLang=en#users-access) - [Billing & Invoices](https://knowledge.profitmetrics.io/account-billing?hsLang=en#billing-invoices) - [Privacy & Consent](https://knowledge.profitmetrics.io/privacy-consent?hsLang=en#main-content) - [GDPR](https://knowledge.profitmetrics.io/privacy-consent?hsLang=en#gdpr) - [Consent Management Platforms](https://knowledge.profitmetrics.io/privacy-consent?hsLang=en#consent-management-platforms) - [Google Consent Mode](https://knowledge.profitmetrics.io/privacy-consent?hsLang=en#google-consent-mode) - [For Agencies](https://knowledge.profitmetrics.io/for-agencies?hsLang=en#main-content) - [Getting Started as an Agency](https://knowledge.profitmetrics.io/for-agencies?hsLang=en#getting-started-as-an-agency) - [Agency Certification](https://knowledge.profitmetrics.io/for-agencies?hsLang=en#agency-certification) - [Shopify](https://knowledge.profitmetrics.io/shopify?hsLang=en) - [PrestaShop](https://knowledge.profitmetrics.io/prestashop?hsLang=en) - [Google Ads](https://knowledge.profitmetrics.io/google-ads?hsLang=en#main-content) - [troubleshoot](https://knowledge.profitmetrics.io/google-ads?hsLang=en#troubleshoot) - [Meta (Facebook / Instagram)](https://knowledge.profitmetrics.io/meta-facebook-instagram?hsLang=en) - [Uncategorized](https://knowledge.profitmetrics.io/uncategorized?hsLang=en) - [Billing](https://knowledge.profitmetrics.io/billing?hsLang=en) - [Google Sheets](https://knowledge.profitmetrics.io/google-sheets?hsLang=en) - [Account](https://knowledge.profitmetrics.io/account?hsLang=en) - [Ideal Shop](https://knowledge.profitmetrics.io/ideal-shop?hsLang=en) [![ProfitMetrics logo black version](https://knowledge.profitmetrics.io/hs-fs/hubfs/pm_logotype_blue.png?width=193&height=28&name=pm_logotype_blue.png "ProfitMetrics logo black version")](https://profitmetrics.io) [mailto:support@profitmetrics.io](mailto:support@profitmetrics.io) Copyright © 2026, ProfitMetrics ApS