I'm using Xerces 1.4.2 and I have a question about Schema design etc...I'm sure this is a newbie question... I have a schema that validates an instance of an XML doc...what I don't understand is that if I remove the xsd: qualifiers and let the namespace be defaulted to the 2001/schema etc..it complains about my request element...If I specifically say no namespaces then why is it complaining? I suppose it's not a big deal to leave the xsd: in there but shouldn't it allow me to not have it in there if I tell it to process with xsi:noNamespaceSchemaLocation? <request xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="simple.xsd" server="myserver" database ="mydatabase"> <mmm_facility_code>ht</mmm_facility_code> <qc_status_code>Qtx</qc_status_code> </request> Here is an example of a schema that works... <?xml version="1.0" encoding="UTF-8"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <xsd:element name="mmm_facility_code" type="xsd:string"/> <xsd:element name="qc_status_code" type="xsd:string"/> <xsd:element name="request"> <xsd:complexType> <xsd:sequence> <xsd:element ref="mmm_facility_code"/> <xsd:element ref="qc_status_code"/> </xsd:sequence> <xsd:attribute name="server" type="xsd:string" use="required"/> <xsd:attribute name="database" type="xsd:string" use ="required"/> </xsd:complexType> </xsd:element> </xsd:schema> ..Now this schema does not... <?xml version="1.0" encoding="UTF-8"?> <schema xmlns="http://www.w3.org/2001/XMLSchema"> <element name="mmm_facility_code" type="string"/> <element name="qc_status_code" type="string"/> <element name="request"> <complexType> <sequence> <element ref="mmm_facility_code"/> <element ref="qc_status_code"/> </sequence> <attribute name="server" type="string" use="required"/> <attribute name="database" type="string" use="required"/> </complexType> </element> </schema> This generates the following SAX exception... Generated fault:SAXException Error msg:The content of element type "request" must match "(mmm_facility_code,qc_status_code)". Thanks Doug