Using IMS as a host subsystem
You must define the IMS control region to VTAM® as an application. Your installation needs to decide on a name. This name is used in the definition of application nodes that are added to the SYS1.VTAMLST system data set.
Example: The following is an example of
a control region definition:
IMS APPL AUTH=(ACQ),PRTCT=passwordThis example shows that a password is required in order to start communication with the subsystem. Use the PASSWD keyword on the COMM macro to specify, for IMS system definition, the corresponding password. If the VTAM definition does not use IMS as the name for the IMS subsystem, code the chosen subsystem name in the COMM macro for IMS, using the APPLID keyword. The default APPLID name is IMS.