Sending invalid data and other errors

The exceptional conditions that can occur on SEND MAP and SEND CONTROL commands are listed with the descriptions of these commands in the CICS® Application Programming Reference manual . Most of them apply only to the advanced BMS options: logical messages, partitions, and special devices.

However, it is also possible to send invalid data to a terminal. BMS does not check the validity of attribute and data values in the symbolic map, although it does not attempt to send an extended attribute, like color, to a terminal not defined to support that attribute.

The effects of invalid data depend on both the particular terminal and the nature of the incorrect data. Sometimes invalid data can be interpreted as a control sequence, so that the device accepts the data but produces the wrong output; sometimes the screen displays an error indicator; and sometimes an ATNI abend occurs. The point at which your task is notified of an ATNI depends on whether or not you specified the WAIT option (see Other BMS SEND options: WAIT and LAST).

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