Oracle Message SQL*Loader-00427 - a field condition references a non-scalar field or a LOB field string

ERRORa field condition references a non-scalar field or a LOB field string
CAUSEThe field condition is referencing a field which is either a nested table, varray, column object, LOB or BILE field. These fields with these typescannot be references by other field.
ACTIONCorrect the NULLIF, DEFAULTIF, or WHEN clauses to reference only non-LOB scalar data fields.