Whats wrong with this xml file?

I don't know how to solve the error message;

org.springframework.beans.factory.xml.XmlBeanDefin itionStoreException: Line 16 in XML document from ServletContext resource [/WEB-INF/agioplanering-servlet.xml] is invalid; nested exception is org.xml.sax.SAXParseException: cvc-complex-type.3.2.2: Attribute 'name' is not allowed to appear in element 'ref'.

Line 16 is <ref name="projectServiceImpl">


This is an extract from my dispatcher-servlet.xml;


<bean name="/createProject.htm" class="businessLayer.controller.CreateProjectContr oller">
<property name="formView">
<value>createProject</value>
</property>
<property name="projectService">
<ref name="projectServiceImpl">
</property>
<property name="successView">
<value>readProject</value>
</property>
</bean>

<bean id="projectServiceImpl" class="businessLayer.service.ProjectService">
<property name="ProjectDao" ref="ProjectDao">
</property>
</bean>

<bean id="ProjectDao" class="integrationLayer.model.ProjectDao">
</bean>