Thân chào các anh chị XNC, em check Case numberthì thấy thông báo như vậy em không hiểu. Nhờ anh chị giải thích dùm em. Em thanks you trước nha: U.S. Department of State IMMIGRANT VISA APPLICATION At NVC[TABLE] [TR] [TD]Immigrant Visa Case Number:[/TD] [TD]HCM2009703207[/TD] [/TR] [TR] [TD][/TD] [TD][/TD] [/TR] [TR] [TD][/TD] [TD][/TD] [/TR] [TR] [TD][/TD] [TD][/TD] [/TR] [/TABLE] Please follow the instructions you received from the National Visa Center (NVC) that list the six steps you must take before NVC can schedule your visa interview appointment. This includes submitting to NVC various fees, forms and documents. Once NVC has received all the required items, they will let you know if anything is missing or incomplete. You can also find these instructions online at http://nvc.state.gov (English) and http://nvc.state.gov/espanol (Spanish). You will find contact information for NVC at http://nvc.state.gov/ask.