Before you use cassub to submit a JCL job on your machine, you must already have started the enterprise server using casstart.
If the enterprise server does not have a batch initiator SEP defined that handles jobs of the same class as the job you want to submit, you must also start a suitable batch initiator SEP using the command cassi.
For example:
casstart -rjcldemo cassub -jC:\users\user-ID\documents\Micro Focus\Enterprise Developer\WORKAREA\jcldemo\esjcl\esjcl.jcl -rjcldemo
This submits the JCL in the file C:\users\user-ID\documents\Micro Focus\Enterprise Developer\WORKAREA\jcldemo\esjcl\esjcl.jcl to the enterprise server jcldemo.