When LOV for Validation is set to True, Oracle Forms compares the
current value of the text item to the values in the first column
displayed in the LOV. Whenever the validation event occurs. If the
value in the text item matches one of the values in the first column of
the LOV, validation succeeds, the LOV is not displayed, and processing
continues normally. If the value in the text item does not match one of
the values in the first column of the LOV, Oracle Forms displays the
LOV and uses the text item value as the search criteria to
automatically reduce the list.