Error creating a Custom Object via REST

Question

Hi- we're developing a third party app that will publish to Eloqua and may need to create and upsert to Custom Objects.  We whipped up a quick PoC using the sample code provided (thank you) but we're having trouble getting the create operation to be successful.  The code we're using is Java and works fine for: reading/writing contacts and reading Custom Objects.  Here's the wire info on the Create call that is failing:
Request payload (authentication works fine - we're using it for other successful calls):
POST: https://secure.eloqua.com/API/REST/1.0/assets/customObject/
{"id":9987,"name":"rest test","fields":[{"name":"sample text field","dataType":"2","type":"CustomObjectField","id":1},{"name":"sample numeric field","dataType":"1","type":"CustomObjectField","id":2},{"name":"sample date field","dataType":"5","type":"CustomObjectField","id":3}],"page":0,"pageSize":0}
Response:
<Fault xmlns="http://schemas.microsoft.com/ws/2005/05/envelope/none"><Code><Value>Receiver</Value><Subcode><Value xmlns:a="http://schemas.microsoft.com/net/2005/12/windowscommunicationfoundation/dispatcher">a:InternalServiceFault</Value></Subcode></Code><Reason><Text xml:lang="en-US">The server was unable to process the request due to an internal error.  For more information about the error, either turn on IncludeExceptionDetailInFaults (either from ServiceBehaviorAttribute or from the &lt;serviceDebug&gt; configuration behavior) on the server in order to send the exception information back to the client, or turn on tracing as per the Microsoft .NET Framework 3.0 SDK documentation and inspect the server trace logs.</Text></Reason></Fault>
I'm assuming that we're just forgetting to set something in the header or payload of the call.  Can you provide some insight into what we're doing wrong here?
Thanks!

Answer 1

Fred,
Thanks for the info above.  I retried the call with various combinations of IDs ranging from:
- All different negative IDs
- All the same negative IDs (-1)
- Custom Object negative and fields positive (and vice versa)
None of them worked.  I've attached the full HTTP envelope this time... I find it curious that the response is 404 (vs. 5XX)... am I calling the correct method/URL?
Thanks,
Dan
======================================================
POST /API/REST/1.0/assets/customObject/ HTTP/1.1
Content-Type: application/json
Authorization: Basic [masked]==
User-Agent: Java/1.6.0_37
Host: secure.eloqua.com
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
Content-Length: 303
{"id":-100,"name":"rest test","fields":[{"name":"sample text field","dataType":"2","type":"CustomObjectField","id":-1},{"name":"sample numeric field","dataType":"1","type":"CustomObjectField","id":-2},{"name":"sample date field","dataType":"5","type":"CustomObjectField","id":-3}],"page":0,"pageSize":0}
=============================================
HTTP/1.1 404 Not Found
Cache-Control: private
Content-Length: 748
Content-Type: text/html; charset=UTF-8
P3P: CP="IDC DSP COR DEVa TAIa OUR BUS PHY ONL UNI COM NAV CNT STA",
X-Powered-By: ASP.NET
Date: Fri, 23 Nov 2012 13:36:37 GMT
<Fault xmlns="http://schemas.microsoft.com/ws/2005/05/envelope/none"><Code><Value>Receiver</Value><Subcode><Value xmlns:a="http://schemas.microsoft.com/net/2005/12/windowscommunicationfoundation/dispatcher">a:InternalServiceFault</Value></Subcode></Code><Reason><Text xml:lang="en-US">The server was unable to process the request due to an internal error.  For more information about the error, either turn on IncludeExceptionDetailInFaults (either from ServiceBehaviorAttribute or from the &lt;serviceDebug&gt; configuration behavior) on the server in order to send the exception information back to the client, or turn on tracing as per the Microsoft .NET Framework 3.0 SDK documentation and inspect the server trace logs.</Text></Reason></Fault>