A store admin can maintain PIN codes in the PIN Codes tab of the related product details page.
Here, it is possible to see a list of sold PIN codes created both automatically and manually. For manually created PIN codes, the list also contains items in stock. In addition, a store admin can delete manually created PIN codes if they have not been sold.
PIN codes with the Sold and Blocked status have a link to the relevant order. The Blocked status means that the related order is waiting for payment.