SoapUI Assertions - either XPath or Contains Assertion would be fine - testing

Question

Sample response below. I want to check the existence of a specific error code (860) in the response below. Technically, to avoid picking the error up accidentally in a reference number, I need to be checking it is in the bit labelled < code >860< /code > (inserted spaces so it would show).
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<ns2:activatePortResponse xmlns:ns2="http://transferobjects.abc.abc.org">
<return som="6001365" state="Approved">
<errors>
<error>
<code>860</code>
<description>The Port cannot be activated outside the ready for service dateTime window (grace period taken into account).</description>
<mnemonic>RFS_WINDOW</mnemonic>
</error>
<name>som</name>
</errors>
<success>false</success>
</return>
</ns2:activatePortResponse>
</soap:Body>
</soap:Envelope>
I was trying to build a set of calls with expected error results to check the the error responses are returned as they should. Going through all the usual garbage messages that meant nothing to me, I just kept tweaking.
Turned out I could use a Contains method and just paste in more, rather than just 860 or even < code >860< /code > I just had to paste in a bigger chunk like this:
<error>
<code>860</code>
<description>The Port cannot be activated outside the ready for service dateTime window (grace period taken into account).</description>
<mnemonic>RFS_WINDOW</mnemonic>
</error>
So I have a solution, but if anyone wants to show me how to do it with XPath, in a less hamfisted way, that would be cool.

Answer 1

You could do an XPath Match assertion with the following expression //error/code, which in the above response message would find 860. This way you know that this 860 has been found at a particular place in the XML hierarchy.