Oracle Message KUP-03003 - absolute end(number) - start(number) != fieldlength (number) for field string

ERRORabsolute end(number) - start(number) != fieldlength (number) for field string
CAUSEThe number of bytes occupied by the field as specified by the starting offset and ending offset of the field is not the same as the number of bytes specified for the datatype of the field.
ACTIONVerify the absolute begin/end position(s) specified match the length of the field.