Enable batch tracking for existing product
To enable batch tracking for an existing product first select the product in inventory. You’ll see the Product Update popup.
Tap on the checkbox under the location section and your product will be marked as a batch tracked.
Now you’ll see Assign initial stock to batch button. Click on it.
You’ll be redirected to another page where you must assign stock and add manufactured and expiration dates for that product.
Now tap on the Save button.
These batch trackings will now be based on sales orders, purchase orders, and stock adjustments they are tied to. To see which documents a batch is associated with go to Inventory -> Batches -> click the batch you would like to view.