Hi,

I am trying to get the below scenario,

Root
  Categories
    Category 1
      ItemRef name=1
    Category 2
      ItemRef name=1
  Items
    Item name=1 Desc=
    Item name=2 Desc=

But my schema gives me a keyref cannot find key in scope error. Please
suggest what is wrong in my schema.

<?xml version="1.0" encoding="utf-8" ?>
<!-- Created with Liquid XML Studio 1.0.8.0 (http://www.liquid-
technologies.com) -->
<xsd:schema xmlns:sql="urn:schemas-microsoft-com:mapping-schema"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:element name="Root">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element minOccurs="1" maxOccurs="1" ref="Categories" />
        <xsd:element minOccurs="1" maxOccurs="1" ref="Items" />
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>
  <xsd:element name="Categories">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element minOccurs="0" maxOccurs="unbounded"
ref="Category" />
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>
  <xsd:element name="Items">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element minOccurs="0" maxOccurs="unbounded" ref="Item" />
      </xsd:sequence>
    </xsd:complexType>
    <xsd:key id="ItemReferenceKey1.key" name="ItemReferenceKey1">
      <xsd:selector xpath="Items/Item" />
      <xsd:field xpath="@ItemName" />
    </xsd:key>
    <xsd:keyref id="ItemReferenceKeyRef1.keyref"
name="ItemReferenceKeyRef1" refer="ItemReferenceKey1">
      <xsd:selector xpath="Categories/Category/ItemReference" />
      <xsd:field xpath="@ItemName" />
    </xsd:keyref>
  </xsd:element>
  <xsd:element name="Category">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element minOccurs="0" maxOccurs="unbounded"
ref="ItemReference" />
      </xsd:sequence>
      <xsd:attribute name="CategoryName" type="xsd:ID" use="required" /
>
    </xsd:complexType>
  </xsd:element>
  <xsd:element name="Item" type="Item" />
  <xsd:complexType name="Item">
    <xsd:sequence />
    <xsd:attribute name="ItemName" type="xsd:ID" use="required" />
    <xsd:attribute name="Type" type="xsd:string" />
    <xsd:attribute name="Identifier" type="xsd:string" />
    <xsd:attribute name="Assembly" type="xsd:string" />
  </xsd:complexType>
  <xsd:element name="ItemReference">
    <xsd:complexType>
      <xsd:sequence />
      <xsd:attribute name="ItemName" type="xsd:IDREF" use="required" /
>
    </xsd:complexType>
  </xsd:element>
</xsd:schema>