< 			<xs:element name="ReferenceParameters" type="tns:ReferenceParametersType" minOccurs="0"/>
---
> 			<xs:element ref="tns:ReferenceParameters" minOccurs="0"/>
32a33
> 	<xs:element name="ReferenceParameters" type="tns:ReferenceParametersType"/>
125,132d125
< 	<xs:element name="ProblemHeader" type="tns:AttributedAnyType"/>
< 	<xs:complexType name="AttributedAnyType" mixed="false">
< 		<xs:sequence>
< 			<xs:any namespace="##any" processContents="lax" minOccurs="1" maxOccurs="1"/>
< 		</xs:sequence>
< 		<xs:anyAttribute namespace="##other" processContents="lax"/>
< 	</xs:complexType>