How to Display Lots & Serial Numbers on Customer Invoice in Odoo 18

Introduction

Managing inventory effectively means tracking each item precisely especially when working with serialized or lot-tracked products. In Odoo, you can easily configure the system to display Lot and Serial Numbers on customer invoices, giving full traceability to your customers and internal team.By enabling the option to display Lot and Serial Numbers on customer invoices, businesses can ensure transparency, compliance, and enhanced customer satisfaction. This guide walks you through the steps to enable this feature and explains how it benefits your operations.

Enable Lot & Serial Numbers on Invoices:

From the main dashboard, navigate to the Inventory app. This module manages all aspects of stock control, including incoming shipments, deliveries, and internal transfers. Since serial and lot tracking are tied directly to inventory movements, this is where the relevant setting is located.

In the top menu, click on Inventory > Configuration > Settings. 

Check the box labeled “Display Lots & Serial Numbers on Invoices.

This setting ensures that any tracked product will show its corresponding lot or serial number on customer invoices. It’s especially useful for businesses that need to meet regulatory compliance or offer product traceability.

Once the Lots & Serial Numbers feature is activated, configure individual products to be tracked using lots. To do this, go to Inventory app ‣ Products ‣ Products, and choose a product to configure.

Create a Sales Order with Tracked Product

Navigate to the Sales module and create a new Sales Order.
Select the customer and add the product you configured earlier — for example, “Three-Seat Sofa.”

Since this product has been configured for lot or serial number tracking, confirming the Sales Order will automatically generate a corresponding Delivery Order.

Assign Lot/Serial Number in Delivery Order

Under the Operations tab, you will see the product line for “Three-Seat Sofa.” In the Lot/Serial Number column, click to assign or select a lot or serial number

Create and Print the Customer Invoice

After validating the delivery, go back to the Sales Order and click Create Invoice.

Once the invoice is confirmed, click Print to generate the PDF.

The printed invoice will now include the Lot or Serial Number linked to the “Three-Seat Sofa” under the product line.

Conclusion

Displaying Lot and Serial Numbers on customer invoices in Odoo 18 provides a layer of transparency and control for businesses that handle tracked products
By configuring your products for lot or serial tracking and enabling the display option on invoices, you streamline operations, improve customer satisfaction, and stay audit-ready. With just a few simple steps in Odoo, you can turn your invoice into a powerful tool for traceability and accountability.

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