Jibx Compile Exception

I have a maven project separeted in 2 main modules, API and EJB . In my EJB project I'm using the JIBX-Maven-plugin as follows

    <plugin>
      <groupId>org.jibx</groupId>
      <artifactId>jibx-maven-plugin</artifactId>
      <version>1.2.5</version>
      <configuration>
         <schemaBindingDirectory>src/main/resources/binding</schemaBindingDirectory>
         <includeSchemaBindings>
            <includeSchemaBindings>*_bind.xml</includeSchemaBindings>
         </includeSchemaBindings>
         <verbose>true</verbose>
      </configuration>
      <executions>
         <execution>
            <goals>
               <goal>bind</goal>
            </goals>
         </execution>
     </executions>
  </plugin>

In my *bind.xml file I'm trying to map an object that is located in my API module :

    [...]
     <mapping name="XPTO" class="PACKAGE.API.OBJECT">
    [...]

The problem I am always getting this error

    org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.jibx:jibx-maven-plugin:1.2.5:bind (default) on project XPTO-ejb: Should never be called with null root

I am doing something terribly wrong here ?

Any help will be great.

Thank you, Pedro Ferreira