For bulk load, these
are source records that failed internal processing before they were
written to the database. For example, a record might contain only
six fields, but eight fields were expected. Load records are in the
same format as the source file.
For extraction, these
are records that were retrieved from the database that could not be
properly written into the target format. For example, a database value
might be a string of ten characters, but a fixed-width format of only
eight characters was specified for the target file.