Santuario with Java STAX-API ID in wrong namespace

[etlam nahkcip]

Hi,

I am trying to sign a XML-Message with help of Apache Santuario.

What I'd like to achieve is having an Enveloped Signature.

This is working so far, what's an Issue though, is that Santuario is
putting an ID field into the elements.
This ID field is not assigned to a namespace, which in my usacese leads to
an invalid XML, since it can't be verified with the given XSD.

Even with the demo which is provided on
https://github.com/coheigea/testcases/tree/master/apache/santuario/santuario-xml-signature

I can't see that there is a namespace assigned to the ID.

Example Output:

<PurchaseOrder xmlns="urn:example:po">
    <dsig:Signature xmlns:dsig="http://www.w3.org/2000/09/xmldsig#";
        Id="Gaedee093-cfca-400c-b436-89dc426c0418">
        <dsig:SignedInfo>
            <dsig:CanonicalizationMethod
                Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"; />
            <dsig:SignatureMethod Algorithm="
http://www.w3.org/2000/09/xmldsig#rsa-sha1"; />
            <dsig:Reference URI="#G5ee3b986-92b3-4c05-a23d-268dd04c4d8a">
                <dsig:Transforms>
                    <dsig:Transform Algorithm="
http://www.w3.org/2001/10/xml-exc-c14n#"; />
                </dsig:Transforms>
                <dsig:DigestMethod Algorithm="
http://www.w3.org/2000/09/xmldsig#sha1"; />
                <dsig:DigestValue>DigestValue</dsig:DigestValue>
            </dsig:Reference>
        </dsig:SignedInfo>
        <dsig:SignatureValue>SignatureValue</dsig:SignatureValue>
        <dsig:KeyInfo Id="G18aed097-5cbc-48da-94ff-fdfca5a0b3b9">
            <dsig:X509Data>
                <dsig:X509Certificate>CertValue</dsig:X509Certificate>
            </dsig:X509Data>
        </dsig:KeyInfo>
    </dsig:Signature>
    <Items>
        <Item Code="001-001-001" Quantity="1">
            spade
        </Item>
        <Item Code="001-001-002" Quantity="1">
            shovel
        </Item>
    </Items>
    <ShippingAddress>
        Dig PLC, 1 First Ave, Dublin 1, Ireland
    </ShippingAddress>
    <PaymentInfo Id="G5ee3b986-92b3-4c05-a23d-268dd04c4d8a">
        <BillingAddress>
            Dig PLC, 1 First Ave, Dublin 1, Ireland
        </BillingAddress>
        <CreditCard Type="Amex">
            <Name>Foo B Baz</Name>
            <Number>1234 567890 12345</Number>
            <Expires Month="1" Year="2005" />
        </CreditCard>
    </PaymentInfo>
</PurchaseOrder>

Is there any way to exclude the ID or to assign it to a namespace?

Best Regards