Problem:
When running a JCL job that accesses a dataset on a Mainframe, an RTS124 error will be issued if the ES region is started from an IDE or from ESMAC.
This indicates that the region cannot access the mainframe due to invalid credentials and eventually gets a timeout.
Solution:
To stop this from happening you must ensure that the ES region is started from the command line.
#EnterpriseDeveloper
#MFDS
#RTS-124
#JCL
#Mainframe
