ICP556I dddd,err,cm,stat,sense

Explanation

While IOCP was reading from an input device or writing to an output device, IOCP detected an error that cannot be corrected. Two consecutive commas or a blank field indicates that a field could not be determined.

In the message text, the fields are:
dddd
The device address or number, in hexadecimal.
err
A description of the error based on status and sense information:
BOC
Bus-out check.
CCC
Channel control check.
CDC
Channel data check.
CHC
Chaining check.
CMD
Command reject.
CPC
Channel program check.
EQC
Equipment check.
ICC
Interface control check.
IOE
Input/output error (for errors other than those errors described).
OVR
Data overrun.
PRC
Channel protection check.
REC
Record error. (The record read was not 80 bytes or a multiple of 80 bytes.)
SEN
A unit check occurred during a sense operation. (When this condition is present, the sense field is not in the message text.)
cm
The command code, in hexadecimal, of the channel command word (CCW) being processed when the error occurred. If the channel command word cannot be found, this field is shown as **.
stat
The status portion, in hexadecimal, of the channel status word (CSW).
sense
The sense data can be a maximum of 24 bytes long. The first two sense bytes are for the error condition.

System action

IOCP ends by loading a PSW with a wait state code of B23. This error is probably a hardware error. (Try another device on another channel.)

For a magnetic tape unit, do not unconditionally accept the results of the operation. Check that the tape being used for this job has not been replaced or removed. Consider each message as a potential warning of a marginal condition.

For a card reader, some abnormal error condition occurred. Depending on the severity of the error (check the status information and the sense information) and, depending on the site requirements, take the appropriate action.

Possible values of the err field and appropriate responses are as follows:
CMD REJECT
Command reject. Correct the command and try the function again.
BOC
Bus-out check.
EQC
Equipment check.
ICC
Interface control check.
OVR
Data overrun.

These are permanent hardware faults. Service representative action is required.