<xsd:schema xmlns:xsd=“www.w3.org/2001/XMLSchema” targetNamespace=“aaa_ns” xmlns=“www.w3.org/1999/XSL/Transform”>

<xsd:element name="aaa">
        <xsd:complexType>
                <xsd:choice>
                        <xsd:any namespace="##other" processContents="skip" />
                        <xsd:any namespace="##local" processContents="skip" />
                </xsd:choice>
        </xsd:complexType>
</xsd:element>

</xsd:schema>