Length facet illegal in restriction of list type

 

The schema listed below contains a simplification of a construct found in the
GML 3.1.1 schemas.

 

Saxon-SA produces the following error message about the length facet: 

"The length facet is not applicable to types derived from
codeAndTwoIntegersType_anonymous_type_2_at_line_7_of_ListTest1.xsd_36

 

Any pointers on why the length facet is illegal in this situation?

 

Regards,

Nick Ardlie.

 

<?xml version="1.0" encoding="UTF-8"?>

<schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns="http://www.w3.org/2001/XMLSchema"

            targetNamespace="http://ns1.com" xmlns:ns1="http://ns1.com">

            <element name="codeAndInteger"
type="ns1:codeAndTwoIntegersType"/>

            <complexType name="codeAndTwoIntegersType">

                        <simpleContent>

                                    <restriction
base="ns1:codeAndIntegerListType">

                                                <length value="2"/>

                                    </restriction>

                        </simpleContent>

            </complexType>

            <complexType name="codeAndIntegerListType">

                        <simpleContent>

                                    <extension base="ns1:integerList">

                                                <attribute name="code"
type="anyURI" use="required"/>

                                    </extension>

                        </simpleContent>

            </complexType>

            <simpleType name="integerList">

                        <list itemType="int"/>

            </simpleType>

</schema>