USER LABEL I/O ERROR CAUSED TERM.
Explanation
An uncorrectable I/O error occurred.
- A standard user label exit was present and the error occurred
during label processing.
- A user totaling exit was present and the error occurred while
the utility was placing data on the output data set.
System action
The program is ended. The return code is 12.
Programmer response
If further handling of the error is desired,
the user exit should be expanded to examine the standard status information
and issue an appropriate message.
Source