Not 

To express Left expression NOT Equal/Is/Like Right expression. NOT
GE is also possible, but use LT instead. It is easier to understand To negate a
bunch of conditions, group in a collection and use the exclude attribute. To
negate a unique condition, use the exclude attribute on the
condition.

Attribute Information

Used By

Element Comparison

Source 

<xs:attribute name="Not" type="xs:boolean" use="optional">
  <xs:annotation>
    <xs:documentation>To express Left expression NOT Equal/Is/Like Right expression. NOT GE is also possible, but use LT instead. It is easier to understand To negate a bunch of conditions, group in a collection and use the exclude attribute. To negate a unique condition, use the exclude attribute on the condition.</xs:documentation>
  </xs:annotation>
</xs:attribute>

Sample