All users cannot logon to any of our CICS regions The signon fails with error message. 'DFHCE3500 Unable to interpret keyword data. Sign-on is terminated.' How is this fixed?
Apply PTF RO97057, and make sure your ACF2/CICS parms have this in place:
PTF RO93181 causes all CICS regions to unconditionally consider
password phrases supported. This was done in order to support
Advanced Authentication Mainframe (AAM) where more than eight
characters need to be supplied in place of a normal password.
This has the effect of causing the distributed CICS Signon
Program, ACFAEUSC, to use the expanded signon panel. If a local
installation has customized ACFAEUSC and does not need or wish
to use the expanded signon panel, this effect could cause the
practical loss of their customization.
This change will evaluate the current ACF2 MVS Password Phrase
setting and state of CA AAM and IBM MFA during CICS Initialization
and consider password phrase support active only when called for.