How to Setup Shopify Integration with Simplify

Modified on Fri, Apr 24 at 4:05 PM

This guide walks you through connecting your Shopify store to ECGrid Simplify using Shopify's Custom App method — the only supported approach since Shopify deprecated private app credentials. Follow all steps in order.

Create the APP:

From your Shopify admin, go to Settings > Apps.
Click Develop apps.
Click Build apps in Dev Dashboard.
From your Dev Dashboard, click Create app.
In the Start from Dev Dashboard section, name your app, and then click Create.

Configure the App Version

In the URLs section, define your app URL. If your app isn't embedded in the Shopify admin, then you can use the default URL https://shopify.dev/apps/default-app-home.
In the Webhooks API Version, select the latest stable version (recommended: 2024-01 or later). Avoid legacy versions as Shopify deprecates older APIs on a rolling basis.
In the Access section, enter the required API scopes (see Section API Access at the bottom for the full scope list with explanations).
Click Release.

⚠️ Important: Record Your Client ID and Client Secret

After creating the app, navigate to the Settings tab in your Custom App. Copy both your Client ID and Client Secret — you will need these for the Simplify Connector. These values are not recoverable without regenerating, which would break an active connection.

From your Shopify admin, go to Settings > Apps.
Click Develop apps then Build apps in Dev Dashboard.
Click Build apps in Dev Dashboard.
In the Apps section, click a custom app that you want to install.
In the Installs section, click Install app.
Optional: If you have multiple stores, then select a store for which you want to install the app.
Click Install.

In Simplify website

1. Login to customer

2. Move to "My Connections" page

3. Click "Add Connection" button

4. Choose Shopify

5. Input: Connect Name, Your *.myshopify.com URL (I)

**Do not enter the https:// in front of your shopify store URL**

6. Choose "Custom" check

7. Input "Client Id and Client Secret" from the custom app page

8. Click Connect

Field	What to Enter
Connection Name	A descriptive label (e.g., "Shopify – Main Store")
Shopify Store URL	Your *.myshopify.com URL only — no https:// prefix
Custom checkbox	Check this box to enable the Custom App credential fields
Client ID	Paste from Shopify Dev Dashboard > App credentials
Client Secret	Paste from Shopify Dev Dashboard > App credentials

Admin API Access

When configuring your custom app in Step 2B, enter all of the following scopes. Each scope is required for specific EDI document flows:

API Scope	Purpose in Simplify Integration
write/read_orders	Receive inbound purchase orders (850) and send order acknowledgments (855)
read_locations	Identify fulfillment locations for ASN (856) generation
write/read_products	Sync product catalog and UPC/item data for EDI item validation
write/read_customers	Match trading partner customer records for EDI partner routing
write/read_inventory	Enable inventory inquiry (846) and update stock levels from EDI feeds
write/read_merchant_managed_fulfillment_orders	Support retailer-directed fulfillment workflows
read_themes	Required by Shopify custom app framework (no EDI function)
read_shopify_payments_payouts	Reconcile remittance advice (820) against payment settlements