ICU1020 INVALID KEYWORD SPECIFIED IN PARM FIELD

Explanation
A keyword parameter specified in the PARM field
of the EXEC statement for the key generator utility program was not
valid.

System action
Key generator utility processing ends.

Programmer response
Supply a valid keyword parameter in the
PARM field. The valid keyword parameters are SETM, CHGM, CHGK, and
SEED. Rerun the key generator utility program.
To ensure that
you have all the messages issued for this problem, specify MSGLEVEL=(1,1)
for the job.

Source
Cryptographic Unit Support Program (CUSP)