Valid XML generation situation

[Edward Morris]

My Code
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SchemaFactory sf = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
URL schemaURL = new URL("http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd");
Schema schema = sf.newSchema(schemaURL);


//Create instance of DocumentBuilderFactory
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
factory.setValidating(true);
factory.setSchema(schema);
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What I'm trying to do

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Generate XML output that conforms to that schema and is valid

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The ERROR

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sch-props-correct.2: A schema cannot contain two global components with the same name; this schema contains two occurrences of 'http://graphml.graphdrawing.org/xmlns,key.extra.attrib'.

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The Schema

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http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd

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What I need

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HELP! HELP! HELP! HELP!