Use the SFTP Upload File action to upload a single file to the SFTP server.
Specify the destination directory or destination directory including the filename on the SFTP server. You may specify a directory that doesn't exist and it will be created for you. Make sure the directory is a full path (specified from the user's home directory). The SFTP protocol doesn't have the concept of a "current directory" like FTP does. If specifying a filename, then the file will be transferred as the new filename.
Select what should be done if a file already exists on the server with the same name. Select either: Overwrite, Skip, Append, or Resume.