Another key piece of information needed when reordering your cards is the facility code. This code is a number from 0 to 255 that is assigned to your location when first encoded.
If you have a large organisation, then there may be more than one facility code on your cards so its important to look for this when reordering your cards.
If you are struggling to find this on the front of your cards, have a look at the box the cards came in or check previous invoices from earlier orders.