Set Up n8n Automation Workflows for Supply Chain Monitoring and Reporting

n8n monitors inventory levels in SAP, alerts procurement via WhatsApp when stock drops below a threshold and generates a purchase order.

• n8n installed.
• SAP system with API access.
• A WhatsApp account with Twilio integration.

 

Prepare n8n Environment

• Navigate to http://localhost:5678 (or your n8n hosted URL) and log in.
• Click “Workflows,” then “+ New,” and name it (e.g., “Supply Chain Monitor”). Click “+” to start.

Trigger Node: Schedule

Node: Schedule

Settings:

• Interval: Every hour

Output: Trigger signal.

Inventory Node: SAP

Node: SAP

Settings:

• Credentials: SAP API key
• Resource: Inventory
• Operation: Get
• Filter: Stock < 100 units

Output: Low stock data (e.g., {{ $json.items }}).

Alert Node: WhatsApp (Twilio)

Node: Twilio

Settings:

• Credentials: Twilio API key
• To: Procurement team number
• Message: Stock low for {{ $node["SAP"].json.items[0].name }}: {{ $node["SAP"].json.items[0].quantity }} units

Output: Alert sent.

Order Node: SAP

Node: SAP

Settings:

• Resource: Purchase Order
• Operation: Create
• Item: {{ $node["SAP"].json.items[0].name }}
• Quantity: 500

Output: Order generated.

• Flow: Schedule (trigger) → SAP (check) → Twilio (alert) → SAP (order).
• Execution: ~20 seconds.

• Prevents stockouts with instant alerts.
• Speeds up reordering by ~85%.
• Enhances supply chain visibility.

• SAP Fail: Verify API credentials.

• WhatsApp Issues: Check Twilio setup.

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