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This guide explains how to set up Shop Pay as a merchant. When a visitor clicks a buy link, a draft order is created in your Shopify store and they are sent to Shopify checkout — with Shop Pay one-click for returning customers. The overall flow matches the generic merchant setup; use this page for Shop Pay–specific notes.
Shop Pay uses Shopify’s Draft Order API and supports bumps (multiple line items). For a simple cart redirect to your Shopify store, see Shopify Checkout instead.

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Prerequisites

  • A Shopify store (same connection as Order Sync)
  • Admin access to your Shopify store and to ElasticFunnels

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Step 1: Connect Shopify and enable Shop Pay

Shop Pay requires your Shopify store to be connected so ElasticFunnels can create draft orders.
  1. Go to Integrations → Operations, find Shopify, and connect your store (see Shopify Order Sync for the full flow)
  2. When connecting (or in the integration settings), enable Shop Pay so the integration can create draft orders
When you enable Shop Pay, a Shop Pay merchant is created automatically and linked to the integration. You do not need to create the merchant manually.

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Step 2: Assign merchant to domain

  1. Go to Settings → Domains → Edit Domain
  2. Select your Shop Pay merchant (created in Step 1)
  3. Save

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Step 3: Map products

Each product must be linked to a Shopify variant ID (a numeric ID from your Shopify store).
  1. Go to Settings → Products → Edit the product
  2. Open the Merchant information tab
  3. Find the row for your Shop Pay merchant
  4. Enter the Shopify variant ID (numbers only) for this product
  5. Save

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How to find your Shopify variant ID

  • Products with variants: In Shopify Admin go to Products → open the product → Variants → click the variant. The URL in your browser will look like .../variants/36485954240671. The number after /variants/ is the variant ID.
  • Products with a single variant: Open the product in Shopify Admin, add .json to the end of the URL, and press Enter. In the JSON, look at the variants array and use the id of the first (or only) variant.
Every Shopify product has at least one variant. Use the variant ID, not the product ID.

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How it works

When a visitor clicks a buy link on your funnel:
  • A draft order is created in your Shopify store with the selected product (and any bump products)
  • The customer is redirected to Shopify checkout to complete payment
  • Returning customers can use Shop Pay one-click checkout when available
  • Bumps are supported — multiple line items can be added to the same draft order
There is no “decline” link; if the customer does not complete checkout, they simply leave. Use the Setup modal in the Merchants list for postback configuration and validation. Use [BUY], [UPSELL], and [DOWNSELL] tags so links auto-adapt per domain and merchant. Avoid pasting hardcoded Shopify or Shop Pay URLs.

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Postbacks

Use the Setup modal in the Merchants list for step-by-step postback instructions and your unique URL. After you configure the postback and trigger a test (or complete a test purchase), the modal will automatically mark the connection as validated once the webhook is received.

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Troubleshooting

  • “Product missing Shopify product ID” or “missing Shopify product ID”: In the product’s Merchant information tab, enter the Shopify variant ID for the Shop Pay merchant. Use the steps above to find the variant ID in Shopify Admin.
  • “Shop Pay gateway requires a Shopify integration” or “requires a Shopify store domain”: Connect Shopify under Integrations → Operations and ensure the merchant is linked to that integration (e.g. via the Order Sync tab on the merchant).
  • Wrong gateway on checkout: Verify the domain is assigned to your Shop Pay merchant.
  • Link not working: Confirm the product has the correct Shopify variant ID in Merchant information for this merchant.