All z/OS Call API jobs fail with the syntax:
PARM='INI=DATA.UCXBM25C.INI CLIENT=<your four-digit client number>,<your user>,<your department>,<your password>'
Release : 12.3
Component : AUTOMATION ENGINE
Compatibility.
This was the old syntax calling the z/OS CallAPI prior to the use of UCCALL4.
The new syntax is:
PARM='INI=DATA.UCXBM25C.INI LOGON=<your four-digit client number>,<your user>,<your department>,<your password>'