Add checkout to your products on Google Merchant Center

Shopify Discussion

Topic summary

Google Merchant Center now allows merchants to add direct checkout/cart links to product listings, requiring a specific URL structure. The discussion centers on determining the correct format for Shopify stores.

Recommended URL Structure:

  • Most commonly successful: https://yourdomain.com/cart/{id}:1
  • Alternative that works for some: https://www.yourdomain.com/cart?item_id={id}
  • The {id} placeholder should remain as-is in Google Merchant Center UI; Google automatically populates it with variant IDs
  • The variant ID is the last segment of Shopify product IDs (format: shopify_US_123456789_123456789)

Common Issues & Solutions:

  • “Missing required parameter: {id}” error often occurs when testing with actual variant IDs instead of leaving {id} as placeholder
  • Adding www. to the domain resolves issues for some users
  • Products must be in stock for validation to succeed
  • Installing the Google & YouTube sales channel app and connecting via API helps establish proper connection
  • If default structure fails, merchants may need to manually submit checkout URLs in the product feed

Current Status:
While many users report success with domain.com/cart/{id}:1, others continue experiencing validation errors. The issue appears related to product ID format, inventory status, or account configuration rather than a universal solution. Some users report blank pages or redirect issues even when Google’s test function passes.

Summarized with AI on October 31. AI used: claude-sonnet-4-5-20250929.
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If it does not work, that means the product ID is not the default shopify ID. Instead it means you have using an SKU or some other type of ID.

In that case, you need to manually submit the URL’s in the feed: https://support.google.com/merchants/answer/13580733