Updates an existing mobile device enrollment profile by invitation

<mobile_device_enrollment_profile>
	<general>
		<name>Configurator Enrollment Profile</name>
		<description>string</description>
		<site>
			<id>-1</id>
			<name>None</name>
		</site>
	</general>
	<location>
		<username/>
		<realname/>
		<real_name/>
		<email_address/>
		<position/>
		<phone/>
		<phone_number/>
		<department/>
		<building/>
		<room/>
	</location>
	<purchasing>
		<is_purchased>true</is_purchased>
		<is_leased>false</is_leased>
		<po_number/>
		<vendor/>
		<applecare_id/>
		<purchase_price/>
		<purchasing_account/>
		<po_date/>
		<po_date_epoch>0</po_date_epoch>
		<po_date_utc/>
		<warranty_expires/>
		<warranty_expires_epoch>0</warranty_expires_epoch>
		<warranty_expires_utc/>
		<lease_expires/>
		<lease_expires_epoch>0</lease_expires_epoch>
		<lease_expires_utc/>
		<life_expectancy>0</life_expectancy>
		<purchasing_contact/>
	</purchasing>
</mobile_device_enrollment_profile>