This article shows different ways to find out if external security is being used for login to Ideal.
z/OS
z/VSE and VSEn
Ideal
In CICS , run
DBUT M=SC00OPTS +E7
It either shows X'D5' (N) or X'E8' (Y)
In Ideal , run
@I$SCF PGM=SC00OPTS OFF=E7
QCODE is another customized value that can be checked by running :
In CICS: DBUT M=SC00OPTS +8
In Ideal: @I$SCF PGM=SC00OPTS OFF=8
@I$INTERNAL STATUS also shows the QCODE value.