How to set UPA rule violation off?

Hi,

I have a WSDL which includes an XSD that violates the UPA (Unique Particle Attribution) rule.
I get this error:

2011-06-15 10:49:47,187 ERROR [errorlog] org.apache.xmlbeans.XmlException: error: cos-element-consistent: Type of 'ReferenceInformation@http://ns.hr-xml.org/2007-04-15' is inconsistent with another element with the same name in this content model.

org.apache.xmlbeans.XmlException: error: cos-element-consistent: Type of 'ReferenceInformation@http://ns.hr-xml.org/2007-04-15' is inconsistent with another element with the same name in this content model.

            at org.apache.xmlbeans.impl.schema.SchemaTypeSystemCompiler.compile(SchemaTypeSystemCompiler.java:225)

I read that it is possible for xmlbeans to set this rule off:
http://jaibeermalik.wordpress.com/2008/06/06/how-to-set-unique-particle-rule-violation-off/

Can I set this noupa=”true” option somewhere in SoapUI?

Groeten,
HJH