IST234I

Explanation
 VTAM® issues
this message when an I/O error occurred on a BSC 3270 terminal or
control unit.
 terminalname is the name of
a terminal or control unit.
 command is the
basic transmission unit (BTU) command and modifier. It represents
the command that the NCP received when the I/O error occurred. For
more information, see NCP and EP Reference Summary and Data
Areas for the 3725 and 3745.
 ncspresponse is
the system or extended response that the NCP sends upon receiving
the command. For more information, see NCP and EP Reference
Summary and Data Areas for the 3725 and 3745.
 bscstatus is
the BSC status information. For more information, see the 3174
Functional Description.

System action
  For an I/O error on a BSC 3270 terminal, VTAM sends an error indication to the application
program.
For an I/O error on a BSC 3270 control unit, depending on NCP
response and the number of failures, VTAM might
resume polling for the data from the control unit.

Operator response
 This is probably a hardware error. If the
problem persists, save the system log for problem determination.

System programmer response
 Use the output provided to assist
you in determining the cause of the problem.

Routing code
 2,8,1 

Descriptor code
 4 