Will CA TPX work with IBM's Express Logon Feature (ELF)?
CA TPX can support ELF through the use of pass tickets.
TPX can support pass ticket use with ACF2, Top Secret (TSS) and RACF.
There is nothing additional to be done in TPX for ELF beyond implementing pass tickets (and/or qualified pass tickets).
For additional information, please refer to the CA TPX Programming Guide - Special Features and Customization Tasks, section Pass Ticket Feature. Please note the section: Operational Difference for Pass Ticket Users.