<?xml version="1.0"?> <!-- Content model error: any-err-not-determinist-1.xsd:29: element complexType: Schemas parser error : local complex type: The content model is not determinist. As per Xerces and XSV this schema is OK. The problem appears when the maxOccurs of <bar> is greater than the one of the <any> wildcard. Additionally if both are "unbounded". If the latter is a different issue we should add an explicit test for it. Examples: <bar> <any> result 2 1 error 2 2 OK 1 2 OK unbounded 2 error unbounded unbounded error 2 unbounded OK --> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="urn:test:foo" elementFormDefault="qualified"> <xs:element name="foo"> <xs:complexType> <xs:sequence> <xs:element name="bar" maxOccurs="2"/> <xs:any namespace="##other" maxOccurs="1" processContents="lax"/> </xs:sequence> </xs:complexType> </xs:element> </xs:schema>