Sign-on incapable terminals do not allow sign-on transactions to be run.
When a terminal is sign-on incapable, the user ID and password must be passed to the CICS® server if the connection is configured with ATTACHSEC=IDENTIFY, and are then authenticated for every transaction started against that terminal. The transaction is executed in the server with the authorities assigned to the authenticated user ID.
The user ID and password for an extended terminal can be specified by a user application when a terminal is added.
The user application can change the security settings of an extended terminal at any time. The new settings will be used when further transactions are started for the terminal.
The user application can also set a default user ID and password to be used with a particular CICS server. For details, refer to Default connection settings.