title: Axis2 error: Invalid white space character (0x4) in text to output
body: <p>I have created a Java client to interact with a SOAP webservice using Axis2 (1.7.6) as code generator. The problem is with some inputs the client is throwing an exception with the message:</p>
  
  <p><code>org.apache.axis2.AxisFault: Invalid white space character (0x4) in text to output (in xml 1.1, could output as a character entity)</code></p>
  
  <p>It seems the serialiser is hitting some chars considered invalid to XML spec. I have seen that problem around but no definitive answer or the fix. I'm not using Spring or any other dependency injection framework, it's a standalone application, so I need to configure the inners of Axis2 by hand.</p>
  
  <p>Any ideas on how to fix/configure the client properly?</p>