| Unable to open SAS SUMMARY File | fatal |
| | The SAS summary file (ie the summary
file produced by odfingest that contains a summary of the observations and odf
data files) could not be opened, probably because
it is not located in the directory where omichain expected it to be |
| Task Failure | fatal |
| | There has been a failure in the specified task, preventing
the omichain from continuing |
| Unable to open inp_directory | fatal |
| | The specified input directory for the
ODF files could not be opened, probably because it has been incorrectly specified |
| The ODF does NOT contain a Periodic Housekeeping file | fatal |
| | The omichain cannot proceed further because it needs to use information from the
periodic housekeeping file |
| The ODF does NOT contain a Non-Periodic Housekeeping file | fatal |
| | The omichain cannot proceed further because it needs to use information from the
non-periodic housekeeping file |