This came up yesterday, a customer wanted an invoice from some items he purchased a few days ago on a statement.
Firstly our understanding is that any customer has the right to ask you for an itemised bill or account for up to 30 days after receiving the statement and must be provided free of charge within seven days of the request.
The main reason is my experience people do request this, is because some of the items have GST and some do not.
It is actually very easy to do in our system as we have automated the operators and you can print in seconds.
I would suggest here using the A4 receipt, in the cash register look for the item, click on the "Receipts" button, find the receipt you would like to print, then select the "A4 Print" button:
Out will come an A4 receipt: