<schema xmlns=“www.ascc.net/xml/schematron” >
<pattern name="Predefined values"> <rule context="AAA"> <report test="normalize-space(.) = 'aaa' or normalize-space(.) = 'bbb'">O.K.</report> <assert test="normalize-space(.) = 'aaa' or normalize-space(.) = 'bbb'">The AAA value is not permitted.</assert> </rule> </pattern>
</schema>