Can a gift voucher be used more than once?

Every gift voucher, when purchased (or created by you), has an initial value.

When a customer uses a gift voucher on your website, they can spend less than the initial value of the gift voucher and retain the remainder on the voucher for use later.

For example, if a voucher has an initial value of £100 and a customer uses it to spend £40, then they can come back to your site at a later date and the gift voucher will still have £60 left to spend.