Example XML Request
<request>
<data/>
<procedure>
<execute namespace='Unified Messaging 2007 Provider' procedure='DisableUMMailbox'>
<executeData>
<identity>Fabrikam\user1</indentity>
<preferredDomainController>dc01.fabrikam.local</preferredDomainController>
<keepProperties>true</ keepProperties>
</executeData>
</execute>
</procedure>
</request>