(Sorry if this becomes a double-post, I posted to the newsgroup (novell.devsup.gwsoap) first, but that message has not (yet) come through.)

Hi,

I'm experiencing a strange problem when sending a modifyItemRequest.
I'm trying to modify an appointment in my Calendar folder.
I get a code 53543: "Use of user defined field without type".
Then the appointment I'm trying to modify, is DELETED!
It disappears completely from my calendar, which is quite unexpected to me.

Here is the SOAP request I send:

Code:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://schemas.novell.com/2005/01/GroupWise/methods" xmlns:ns2="http://schemas.novell.com/2005/01/GroupWise/types">
	<SOAP-ENV:Header>
		<ns2:session>7G977dYZ2VJsH_1S</ns2:session>
	</SOAP-ENV:Header>
	<SOAP-ENV:Body>
		<ns1:modifyItemRequest>
			<ns1:id>4A9E3285.MY-DOM.MY-PO.100.168646C.1.612.1@4:A.MY-DOM.MY-PO.100.0.1.0.1@19</ns1:id>
			<ns1:updates>
				<ns2:update>
					<ns2:modified>2009-09-02T07:11:00Z</ns2:modified>
					<ns2:subject>Testappointment</ns2:subject>
					<ns2:message>
						<ns2:part>bXlEZXNjcmlwdGlvbg==</ns2:part>
					</ns2:message>
					<ns2:startDate>2009-09-04T14:00:00Z</ns2:startDate>
					<ns2:endDate>2009-09-04T14:30:00Z</ns2:endDate>
					<ns2:place></ns2:place>
				</ns2:update>
			</ns1:updates>
		</ns1:modifyItemRequest>
	</SOAP-ENV:Body>
</SOAP-ENV:Envelope>