XPL Error Codes:

100 Unable to open files PROGRAM, SYSIN, or SYSPRINT during initialization.
200 Unexpected end-of-file while reading the XPL program.
300 Uncorrectable I/O error while reading the XPL program.
400 The XPL program could not be loaded into the amount of memory available.
500 The XPL program called the submonitor with an invalid service request code.
800+i Uncorrectable I/O error on file output(i).
900+i The XPL program requested output(i)  for an unimplemented i.
1000+i  Uncorrectable I/O error on file input(i).
1200+i The XPL program attempted to read past end-of-file on input(i).
1400+i The XPL program requested input(i)  for an unimplemented i.
2000+i Uncorrectable I/O error on file file(i).
2200+i The XPL program attempted to read past end-of-file on file(i).
4000 The XPL program requested abnormal termination via call exit;.