Activating and Displaying EAN Codes on Invoices
An EAN code is a unique product identifier that you can activate and display on invoice rows as follows:
Activating the EAN Code
Go to Settings (gear icon in the top menu)
Select Inventory Management Settings
Enable the option EAN code in use by checking the box
Displaying the EAN Code on Invoice Rows
Go to Settings (gear icon in the top menu)
Select Inventory Management Settings
Enable the option Show EAN code on invoice rows by checking the box