You cannot use the callable interface from within QMF while in the CICS environment.
You can use the callable interface from within QMF in all supported environments except CICS to run applications that modify QMF temporary storage areas. For example, you might want to export or import files through the callable interface even though you are in the middle of a QMF session.
You can do this by using the CMS or TSO command to call an application. You can run any valid QMF command from the application. Because QMF is already active, you should not issue the START command.
You must set the DSQCOMM instance identifier (DSQ_INSTANCE_ID) to zero (0) before your first call to QMF. QMF determines the current instance and updates DSQ_INSTANCE_ID for use in subsequent QMF calls.