When running a job and I am getting the following error:

[supp@vmcobol]$ cassub /rSCBTEST /jDEFQSAM1.JCL
CASBJ0050E JES support not enabled; Job rejected 15:23:16
Processed "DEFQSAM1.JCL"

Start up a web browser and then start up the Enterprise Server Administration web page. 
Click on the "Edit" button of the started ES region, then click on the "Control" tab and finally click on the
"ES Monitor & Control" (ESMAC) button.

On the left hand side of the ESMAC web page, there's a "Resources" dropdown list and you should see
"JES" listed as being available.  If it isn't, check the following:

- on the Enterprise Server Administration web page, click on the "Edit" button of the running ES region. 
Click on the "MSS" tab and ensure "Mainframe Subsystem Support enabled" is ticked.  Then click on the
JES tab underneath to ensure the "Job Entry Subsystem enabled" is also ticked. 

- check the UNIX file permissions. The directory and its subordinates, which contains the source code,
executables and data files, don’t have the correct write permissions for esadmin (the configured user in
MFDS) to be able to open the spool – a file status 37 was being reported in the console log. This
resulted in JES being disabled.

I have changed the permissions so that uog all have write access and JES now appears in the Resources
drop-down list.  You should be able to continue the JCL submissions.