n8n Template

Multi-Channel Order Processing

Consolidate orders from Shopify, WooCommerce, and Amazon, check inventory in real time, and trigger fulfillment through ShipStation.

E-commerceAdvancedShopifyWooCommerceAmazonShipStationSlack

What this template does

Selling on more than one channel means juggling separate order queues and separate inventory counts, which is how oversells happen. This workflow unifies them. Orders from Shopify, WooCommerce, and Amazon flow into one process that checks live inventory, reserves stock, creates the fulfillment in ShipStation, and syncs tracking back to the originating channel. Your warehouse gets one alert stream and customers get consistent updates.

This is an advanced build because each platform authenticates and delivers orders differently, and inventory reservation logic has to be correct to avoid overselling.

How it works

The trigger is a new order from any channel. The flow:

Receives the order webhook from the platform.
Checks real-time inventory levels.
Reserves stock for the order items.
Creates the fulfillment in ShipStation.
Generates the packing slip and label.
Sends a fulfillment alert to the warehouse.
Waits for shipment confirmation.
Updates the order status on the sales channel.
Sends a tracking email to the customer.

Setup steps

Create a Shopify app with orders access, add a webhook for new orders, and configure inventory sync.
Enable the WooCommerce REST API, create API credentials, and set up an order-creation webhook.
Create Amazon Selling Partner API credentials and configure order polling every 15 minutes.
Build an inventory table in a database, set minimum stock thresholds, and enable low-stock alerts.
Consolidate orders from all channels, check inventory, create fulfillment records, and generate packing slips.
Connect ShipStation, map order data to its format, add carriers and shipping rules, and sync tracking back to Shopify and WooCommerce.
Alert the fulfillment team in Slack, send customer confirmations, and push real-time shipping updates.

When to use it

Use this for multi-channel order aggregation, inventory synchronization, fulfillment automation, shipping cost optimization, and return processing. It becomes essential once you are selling the same SKUs across channels and manual inventory reconciliation can no longer keep up.

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Download the workflow

Import-ready n8n JSON, no credentials or secrets baked in. In n8n, open Workflows, choose Import from File (or paste the JSON), then assign your own credentials to each node.

Download workflow JSON View raw

Preview the JSON

{
  "name": "Multi-Channel Order Processing",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "orders",
        "responseMode": "onReceived"
      },
      "id": "cf60503d-90a8-4187-a79d-10c1ee5f86d0",
      "name": "Order Webhook",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "position": [
        260,
        300
      ],
      "notes": "Point Shopify/WooCommerce/Amazon order webhooks here."
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "e9584387-9c49-42ca-af61-8a934902c95e",
              "name": "orderId",
              "value": "={{ $json.body.id }}",
              "type": "string"
            },
            {
              "id": "2992fef7-3dee-442a-b14f-74a7c46d4fa8",
              "name": "sku",
              "value": "={{ $json.body.sku }}",
              "type": "string"
            }
          ]
        }
      },
      "id": "63ebf454-c9e6-4cf1-869b-0e241d4c472d",
      "name": "Normalize Order",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
        560,
        300
      ]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "https://ssapi.shipstation.com/orders/createorder",
        "sendBody": true
      },
      "id": "2976c9fe-f9e6-4264-b8cc-0f63d742e1a7",
      "name": "Create Shipment",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        860,
        300
      ],
      "notes": "Header Auth credential for ShipStation."
    },
    {
      "parameters": {
        "select": "channel",
        "text": "=Order {{ $json.orderId }} sent to fulfillment"
      },
      "id": "1ab73b45-c1d8-4b6b-a182-4d72718e36e1",
      "name": "Notify Ops",
      "type": "n8n-nodes-base.slack",
      "typeVersion": 2.3,
      "position": [
        1160,
        300
      ]
    }
  ],
  "connections": {
    "Order Webhook": {
      "main": [
        [
          {
            "node": "Normalize Order",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Normalize Order": {
      "main": [
        [
          {
            "node": "Create Shipment",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Create Shipment": {
      "main": [
        [
          {
            "node": "Notify Ops",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "pinData": {}
}

Related resources

n8n Use Case

Automated Order Processing & Fulfillment →

n8n Use Case

Multi-Channel Inventory Synchronization →

n8n Template

Sales Activity Auto-Logger →

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