Invalid NETCONF namespace declaration

The following example shows an invalid NETCONF namespace declared in the <rpc> element.

<?xml version="1.0" encoding="UTF-8"?>
<rpc message-id="101"
xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"
xmlns:alu="urn:alcatel-lucent.com:sros:ns:yang:sr:conf">
        <get-config>
                <source><running/></source>
                <filter>
                    <configure xmlns="urn:nokia.com:sros:ns:yang:sr:conf"> 
                            <router>
                                    <router-name>Base</router-name> 
                                    <interface>
                                         <interface-name>system</interface-name> 
                                    </interface>
                            </router>
                    </configure>
                </filter>
        </get-config>
</rpc>
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In the following reply, SR OS returns an error.

<?xml version="1.0" encoding="UTF-8"?>
<rpc-reply message-id="101" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"
 xmlns:alu="urn:alcatel-lucent.com:sros:ns:yang:sr:conf">
    <rpc-error>
        <error-type>protocol</error-type>
        <error-tag>unknown-namespace</error-tag> 
        <error-severity>error</error-severity>
        <error-message>
          An unexpected namespace is present.
        </error-message>
        <error-info> 
          <bad-element>rpc</bad-element>
          <bad-namespace>urn:alcatel-lucent.com:sros:ns:yang:sr:conf</bad-namespace>
        </error-info>
    </rpc-error>
</rpc-reply>
]]>]]>