Odoo  provides a feature through the “Products Expiration Date” module to track the product by its expiration dates and with the lot and Serial Number of the product.

Here we are talking about tracking different dates on products and production lots.

We need to enable “Lots & Serial Numbers” and “Expiration Dates”  from Main Inventory > Settings Menu.

After Enabling the Feature from Inventory Settings we can see the Lots and Expiration dates Option in Product Master Form.

In Product Form under the inventory information, we can enable the Product “Tracking” Option.

There are three options to Track the Product.

• By Unique Serial Number
• By Lots
• No Tracking

If we set/configure Product “Tracking”  by "By Unique Serial Number"  or ‘By Lots’  then we can see the “Expiration Date” option enabled.
Once we enable the “Expiration Date” checkbox, we can see the dates options to configure the  Expiration Days and based on that system will automatically calculate the Expiration dates.