Please follow next steps to upload IODF:

Use the FTPCSI utility to send your IODF from your z/OS host to the IBM FTP server. The FTPCSI utility is a PDS library to be installed on your z/OS host. One of the functions provided by the FTPCSI utility is to prepare and transfer your IODF to the IBM FTP server.  Note : If you do not have the latest copy of FTPCSI utility, please refresh your copy of FTPCSI utility on your z/OS host to get the latest fixes.