You invoke the Batch Command Interface (BCI) by executing the NMBCI program in a batch processing environment or by calling it from other programs.
Note: The BCI is available on z/OS systems only.
Commands are read from a nominated input device (in card image format) and the replies received are routed to the nominated output device. A user command exit can also be called where commands may be added, changed, or deleted. Return codes from an executed NCL procedure may be translated to JCL return codes, which can then be interpreted using conditional JCL statements.
Requests are executed by NCL procedures running under the User Services option, and the unformatted results of these requests are returned to the output device.
This interface may be used to connect to a product region operating within the same or within a different VTAM domain.