It is suggested that you create any files before transferring them into the QSYS.LIB file system. This is the best method of ensuring that your data is transferred reliably and effectively with optimal performance and integrity.
Be sure to allocate enough records to accommodate the entire file. On the i5/OS® operating system, use the SIZE parameter of the Create Physical File (CRTPF) command.
Ensure that the RCDLEN parameter of the Create Physical File (CRTPF) command is adequate to accommodate the maximum record length expected.
You can create files on the FTP server system using the QUOTE subcommand. You can create files on the FTP client system using the SYSCMD subcommand.