The product is not published to the Google & YouTube channel
How to tell
In Shopify admin, open the product. Under Sales channels on the right, Google & YouTube is unchecked or missing. In Merchant Center, the product does not appear under Products.
How to fix it
- Open the product in Shopify admin. Click Manage next to Sales channels and tick Google & YouTube.
- To do many at once: Products, select all, More actions, Add to sales channels, pick Google & YouTube.
- Check the product status is Active, not Draft or Archived. Drafts never sync.