Defining the CONFIG Parameter
You can define the CONFIG parameter in the PARM field in a JCL statement to specify the name of the CONFIG entry within the FUSCFG configuration entry.
The maximum length of this parameter is 24 characters. And its value must match the CONFIG parameter within the FUSCFG member of the FUSCFG DD statement.
The FUSCFG CONFIG entry can be defined to communicate by using TCP, SNA, or Cross Memory methods. The advantage of using these methods of communication is that all configuration data for communicating to the platform server started task is controlled within a single file. If the connectivity information for a started task changes, the FUSCFG entry can be changed so that individual batch jobs do not have to be changed.