Overriding the APPLID field

Each IMS identifies itself to VTAM® using the application name you specify in the APPLID= keyword of the IMS COMM system definition macro and in the VTAM APPL definition statement.

In order to keep the IMS definitions as similar as possible, you can specify the same name in the APPLID= keyword of the COMM macros for all the IMS systems in a generic resource group. You must then override this name by specifying a unique APPLID name on the APPLID1 execution parameter.

Similarly, you can override the PASSWD field in the COMM macro by using the PASSWD= execution parameter.

Related reading: For more information on the APPLID1 and PASSWD execution parameters, see IMS Version 15.5 System Definition.