Hi,

Currently in Odoo POS, having serial number functionality by default is not available. The serial number feature is available for the core Odoo modules( e.g Sales Module). In case you require the same Serial Number feature in POS, customization would be required to avail it.

Just to add,you can experience the Serial Number usage in CORE modules by following few steps of configuration :-

1. Go to Settings>Configuration>Warehouse>Traceability>Track lots or serial numbers

2. Go to Sales>Products>Products>(Select/Create any Product)>Inventory>Lots>(Check the check boxes as required)

3. Now go an Create an Sales Quotation and Select the Product configured

4. After confirming the Sales Quotation as soon as you click on the button button TRANSFER under DELIVERY ORDER, you will receive a pop up window where you would be asked to enter the LOT SERIAL NUMBER

5. The Serial Number that would be entered would unique for one quantity of same product and it cannot be the same serial number for two quantities of same product.

Hope this helps