When a PTF is delivered from IBM, any associated ++ASSIGN statements are included with the PTF. Thus any ++ASSIGNs which were created after the PTF was delivered will not be available to SMP/E on your system. To ensure that you have access to all the currently available ++ASSIGN statements, the files in this directory may be downloaded and used to supplement any previously received ++ASSIGN statements. The non-RSU ++ASSIGN files are updated daily and have the name of 'sourceid'.txt. The RSU ++ASSIGN files have the name of RSUyymm.txt and are static once created. The ++ASSIGNs for PE and HIPER fixes are not included. To identify missing PE and HIPER fixes, please use OS/390 Enhanced HOLDDATA.