When updating your user profiles, you must allocate Data Express PDSs to ISPF. For example: if your data set library prefix is PPP.GGG and the keylists of Data Express panels are contained in member URDPROF of PPP.GGG.JCL, you need to copy member URDPROF to ISP.SISPTENU or to UserPrefix.ISPF.ISPPROF.
To update user profiles:
TSO EXEC ‘PPP.GGG.CLIST(MFDATA)’