Accessing your Feed File is a paid upgrade. If you haven't added this to your account, do so here to get started exporting it out into other channels.
To get started, you'll need to find the feed file link and copy it onto your clipboard.
You can do this by accessing your account settings, finding the Merchant Center tab, and clicking into the File Feeds section.
Click the Generate files button found at the top right of the page to prompt the app to produce your file.
Note: This may take a couple of minutes to complete, depending on the size of your feed. It's best to click out of this page and back in shortly after to see if your file has been completed.
Now that your file has been created, you can bring your link/feed out into other sales channels, such as Facebook, Amazon, Bing, and more.
Export Your Feed to Facebook
Before you can build out a Shopping campaign in Facebook, you'll need to create a Catalog of products, which is your product data feed. Click on the three lines on the top left of your Business Manager page to open up the menu below and select Catalogs under Assets.
Click on the blue Create Catalog button to begin, than select E-Commerce as your Catalog type on the landing page.
Facebook has guidelines for required fields and other requirements of a Google data feed for it to be eligible to show on Facebook. View those guidelines here: https://www.facebook.com/business/help/712141732251985
Once you've selected the type of catalog, named it, and assigned it to an account, you can add your product data feed.
Find the Data Sources tab and click into it.
From here, select Add Data Source and select Set a Schedule. This will prompt you to enter your Feed File URL taken from the Sales & Orders app, and set when Facebook fetches data for updates.
Once you've completed this, you can begin uploading your products into Facebook.
Congratulations! You can start advertising your products on Facebook! Now it's time to build a campaign!
Begin by starting a new campaign in your Facebook pages' Ads Manager, and selecting Catalog Sales as your Marketing Objective.
From there, select your newly created Catalog for advertisement, and start building out your campaign settings in Facebook.
You can choose to advertise all of your products, or you can create groups of products you would rather focus certain ads on.
For a more in depth look at creating and managing Facebook ads, check out the Facebook Advertiser Help Center.