if (coupon.group.ctype == SINGLE_USE_ONE_MEMBER_ONLY
                and CouponStatus.objects.filter(coupon=coupon).exists()):
            log("Member %s tried to redeem a single-use single-member coupon, failed: %s" % (
                member.pk, code,
            ))

            return (False, u'Only one promo code may be redeemed per transaction')

        elif coupon.group.ctype == ONCE_PER_MEMBER_MAX_USES:

            if 0 < coupon.max_users <= CouponStatus.objects.filter(coupon=coupon).count():
                log("Member %s tried to redeem a once-per-member max user coupon that "
                    "was maxed out, failed: %s" % (member.pk, code))
                return (False, u'Code has already been redeemed!')