If the user is found to have a mailbox plan assignment or
mailbox allocation, an exception will be raised and the procedure
will abort.
The user must be a valid Hosted Messaging and Collaboration
version 4.0 user that is a member of an organization that has
subscribed to Hosted Email 2007. The procedure also requires that
the specified plan must be in the list of available plans for the
organization.
Parameters Format
<executeData>
<user>1..1 </user>
<preferredDomainController>1..1 </preferredDomainController>
<planName>1..1 </planName>
<applyPlanSettings>1..1 </applyPlanSettings>
</executeData>
Returns Format
The return message contains no parameters.
<executeData>1..1 </executeData>