Batch numbers in the expenses inventory and on invoices

I was just wondering, could you please create a space for batch number and expiry in the expenses tab as part of the Inventory documenting - where we document how much we paid and how many we bought? It is Vital, for the batch numbers and expiry of each product purchased to be noted, particularly to track if there has been a recall of that product. This could also be reflected on the patients invoice so we can track who has which batch. The current options are not helpful… For example… The notes section in Expenses, is not comprehensive enough to cover this. And in the Products Section, Product Serial Number if used as the Batch number space, if changed, loses the previously noted batch number.
Thank you