031

Explanation
An I/O error occurred during processing using QISAM.
 The control program attempted to pass control to an error analysis
(SYNAD) routine, but found that (1) the DCBSYNAD field of the data
control block did not contain the address of a valid SYNAD routine,
or (2) the error occurred after a CLOSE macro instruction was run
by task end (the problem program returned control to the supervisor
without processing a CLOSE macro instruction).  The task was abnormally
ended. The DCBEXCD1 and DCBEXCD2 fields of the data control block
indicate the possible causes of the original error:
DCBEXCD1: Bit
Explanation
0
Record not found.
1
Incorrect actual address for lower limit.
2
Space not found.
3
Incorrect request.
4
Uncorrectable input error.
5
Uncorrectable output error.
6
Block could not be reached (input).
7
Block could not be reached (update).

DCBEXCD2: Bit
Explanation
0
Sequence check.
1
Duplicate record.
2
DCB closed when error detected.
3
Overflow record.
4
PUT:  length of field greater than length indicated in DCBLRECL
field of the data control block.
5-7
(Reserved bits).

System programmer response
If the error recurs and the program
is not in error, look at the messages in the job log for more information.
Search problem reporting data bases for a fix for the problem. If
no fix exists, contact the IBM® Support
Center. Provide the JCL and the program listing for the job.

Programmer response
Examine the DCBEXCD1 and DCBEXCD2 fields
of the data control block to determine the cause of the error.  Specify
the address of an error analysis routine to be given control when
an I/O error is detected and, for errors occurring during CLOSE, run
a QISAM CLOSE macro instruction prior to returning control to the
supervisor.  For errors occurring during the processing of a QISAM
CLOSE macro instruction, respond as indicated by message IEC011I or
IEC203I.

Source
DFSMSdfp