For some items you might want to set up specific expiration dates and rules in the item tracking code. This functionality allows you to keep track of when specific serial/lot numbers expire.
Open the Item Tracking Codes window.
Create a new item tracking code or select an existing one.
Click Item Tracking Code, Card.
On the Misc. tab, checkmark the desired fields.
Press F1 to see online Help about the individual fields.
Setting Up Warranties for Serial/Lot Numbers
Setting Up Item Tracking Codes