Vamshi check the sftp module -> https://netsuite.custhelp.com/app/answers/detail/a_id/51361/kw/sftp%20module, in general you can pick up any file you know the name of. You need to save the file in a format that netsuite recognizes, you can check the file module -> https://netsuite.custhelp.com/app/answers/detail/a_id/43524/kw/file%20module