It would be nice to have the Expiry auto fill. For this to work, I would think that under the Product details, where you define vendor, cost, warranty etc... you would have a life-cycle field. You could set number of years that the unit is to be in production. We age out machines that are 5 years old. So I would put 5 years, or 60 months, however the field was set. Then when I put in the aquisition date, it would auto calculate the expiry date of the unit. Not to be confused with warranty expiry.