The method used to make the payment: 2 - offline (cash), 3 - cheque, 4 - bank transfer, 5 - other, 6 - gift certificate, 9 - discount, 10 - credit card number left on file, or one of the payment gateways: 1 - Paypal, 7 - Paypal Sandbox, 8 - Moneybookers, 11 - WorldPay, 12 - WorldPay Test, 13 - Authorize.net, 14 - Sage Pay, 15 - Sage Pay Test, 16 - MultiSafepay, 17 - MultiSafepay Test, 18 - EBS, 19 - Servired, 20 - Servired Test, 21 - Authorize.net - DPM, 22 - Mastercard MiGS, 23 - Wirecard QPAY, 24 - Paybox, 25 - Mercanet, 26 - SystemPay, 27 - SystemPay Test, 99 - other payment gateway