Zoho Inventory ERP Integration

The problem

Orders in Zoho Inventory had to reach a third-party ERP with the shipping, production, add-on, and invoice details needed by sales, fulfilment, and production teams. The ERP API had limited documentation, so its order and attachment behaviour also had to be tested directly.

What the integration sends

Each eligible order can include:

• Order number, reference, status, and custom fields
• Order notes
• Expected despatch and shipment dates
• Shipping and recipient contact details
• Item add-ons
• Palletise Order and Urgent Production flags
• Invoice PDFs

Routing and packing

Despatch-location rules decide which orders enter the integration. Eligible items are packed during the sync before the complete order record is sent to the ERP.

Invoice attachments

Invoice PDFs are attached to the ERP order through the available /orders/attachment endpoint. This required additional testing and coordination because the third-party API documentation was limited.

Technical implementation

• Zoho Deluge handles business rules and API calls
• n8n manages workflow automation and API requests
• Postman was used to test endpoints and validate payloads

Result

Eligible orders now move from Zoho Inventory to the ERP with shipping details, production flags, add-ons, and invoice PDFs. Despatch-location rules prevent ineligible orders from entering the integration.