In this article, we'll see how to claim your Shopify website inside Google Merchant.
NOTE: You'll have to claim your private domain URL on Google Merchant in a similar way.
Before you start using Shopify along with Google Merchant Center, your Shopify custom domain is required to be verified and claimed within Google Merchant Center. This will allow Google to add markers to your website so that it can communicate with your Shopify custom URL.
Click here to learn more about Shopify's custom domain.
Click here to learn how to Verify and claim your Shopify website custom URL