Example XML Request
<request>
<data/>
<procedure>
<execute namespace='Unified Messaging 2007 Provider' procedure='RemoveUMDialPlan'>
<executeData>
<identity>dialPlan1</indentity>
<preferredDomainController>dc01.fabrikam.local</preferredDomainController>
</executeData>
</execute>
</procedure>
</request>