How to parse SOAP Web Services Usage Log responses with SuiteScript 2.0?

I have a SOAP web service integrator with Netsuite that generates a response in XML format, those responses can be seen in the SOAP Web Services Usage Log page. I would like to render this XML response to get notified by email every time that the web service fail, in the execution log the Status said FAILED and opening the response xml file by clicking “view”, it show the reason why it fail, for example:

-<platformCore:statusDetail type="ERROR">
   <platformCore:code>USER_ERROR</platformCore:code>
      <platformCore:message>Please configure the inventory detail in line 1 of the item list. 
      </platformCore:message>
</platformCore:statusDetail>

I was trying to create a saved search with the URL of the response to parse it, but the SOAP Web Service saved search is not scriptable.

Here is an image as an example:

Can anybody give me an idea how to send an email from Netsuite with a message when we get a failed response? Where or how is the best way to access that information? Where should I start? I am out of idea.

Thanks in advance.