How ensure group elements exist and in any order

Hi,
When a group of elements ("VINGroup") is present in my xslt file, I want to confirm that all members of the group are present but they may be in any order (sequence)...
Is there a way do this in the xsd?
This is what I have so far but it forces the VINGroup elements to be in a specific order...
thanks in advance,
gary...

<xsd:element name="Vehicle">
	<xsd:complexType>
		<xsd:sequence>
			<xsd:choice minOccurs="1" maxOccurs="1">
				<!-- Case #1: VIN & Body/Make/Model Group Supplied -->
				<xsd:sequence>
					<xsd:element ref="VehicleIdentificationNumber"/>
					<xsd:group ref="VINGroup" minOccurs="1" maxOccurs="1"/>
				</xsd:sequence>
				<!-- Case #2: VIN Only Supplied -->
				<xsd:sequence>
					<xsd:element ref="VehicleIdentificationNumber" minOccurs="1"/>
				</xsd:sequence>
				<!-- Case #3: Body/Make/Model Group Only Supplied -->
				<xsd:sequence>
					<xsd:group ref="VINGroup" minOccurs="1" maxOccurs="1"/>
				</xsd:sequence>
			</xsd:choice>
		</xsd:sequence>
	</xsd:complexType>
</xsd:element>
<xsd:group name="VINGroup">
	<xsd:sequence>
		<xsd:element name="Body" type="xsd:string"/>
		<xsd:element name="Make" type="xsd:string"/>
		<xsd:element name="Model" type="xsd:string"/>
	</xsd:sequence>
</xsd:group>

Received on Wednesday, 6 October 2004 14:18:10 UTC