esun Esun_OrderNumber::configuration Configure this separately for each Website. Order numbers use Site Name + Number, for example US100001. If empty, the Website code is used. validate-length maximum-length-24 sales/order_number/site_name Used only when this Website generates its first custom order number. Later changes do not reset an active sequence. required-entry validate-digits validate-greater-than-zero sales/order_number/start_number