statuscode and statecode mismatch even though both are explicitly set - web-services

Question

I'm getting an error when creating a service appointment entity through the SOAP webservice about a mismatch between statuscode and statecode:
4 is not a valid status code for state code
ServiceAppointmentState.Open on serviceappointment.
Essentially saying that reserved (statuscode 4) isn't a member of the Open state (statecode 1). Which is true, it's actually a member of the Scheduled state (statecode 3) but in my request I'm correctly setting statecode to 3!
Does anyone know why my setting the serviceappointment to the Scheduled state is being ignored?
full request:
<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<Create xmlns="http://schemas.microsoft.com/xrm/2011/Contracts/Services" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<entity xmlns:a="http://schemas.microsoft.com/xrm/2011/Contracts">
<a:Attributes xmlns:b="http://schemas.datacontract.org/2004/07/System.Collections.Generic">
<a:KeyValuePairOfstringanyType>
<b:key>statecode</b:key>
<b:value i:type="a:OptionSetValue">
<a:Value>3</a:Value>
</b:value>
</a:KeyValuePairOfstringanyType>
<a:KeyValuePairOfstringanyType>
<b:key>serviceid</b:key>
<b:value i:type="a:EntityReference">
<a:Id>c5b8179c-3cab-e211-ab0a-00155d1438e9</a:Id>
<a:LogicalName>service</a:LogicalName>
<a:Name i:nil="true" />
</b:value>
</a:KeyValuePairOfstringanyType>
<a:KeyValuePairOfstringanyType>
<b:key>scheduledend</b:key>
<b:value xmlns:c="http://www.w3.org/2001/XMLSchema" i:type="c:dateTime">2013-06-13T14:30:00</b:value>
</a:KeyValuePairOfstringanyType>
<a:KeyValuePairOfstringanyType>
<b:key>statuscode</b:key>
<b:value i:type="a:OptionSetValue">
<a:Value>4</a:Value>
</b:value>
</a:KeyValuePairOfstringanyType>
<a:KeyValuePairOfstringanyType>
<b:key>subject</b:key>
<b:value xmlns:c="http://www.w3.org/2001/XMLSchema" i:type="c:string">Support handover</b:value>
</a:KeyValuePairOfstringanyType>
<a:KeyValuePairOfstringanyType>
<b:key>scheduledstart</b:key>
<b:value xmlns:c="http://www.w3.org/2001/XMLSchema" i:type="c:dateTime">2013-06-13T09:00:00</b:value>
</a:KeyValuePairOfstringanyType>
<a:KeyValuePairOfstringanyType>
<b:key>py3_workpackageid</b:key>
<b:value i:type="a:EntityReference">
<a:Id>dc7008cf-2eab-e211-ab0a-00155d1438e9</a:Id>
<a:LogicalName>py3_workpackage</a:LogicalName>
<a:Name i:nil="true" />
</b:value>
</a:KeyValuePairOfstringanyType>
<a:KeyValuePairOfstringanyType>
<b:key>customers</b:key>
<b:value i:type="a:EntityCollection">
<a:Entities>
<a:Entity>
<a:Attributes>
<a:KeyValuePairOfstringanyType>
<b:key>partyid</b:key>
<b:value i:type="a:EntityReference">
<a:Id>050d25a8-03c9-e211-866e-00155d143602</a:Id>
<a:LogicalName>account</a:LogicalName>
<a:Name i:nil="true" />
</b:value>
</a:KeyValuePairOfstringanyType>
</a:Attributes>
<a:EntityState i:nil="true" />
<a:FormattedValues />
<a:Id>00000000-0000-0000-0000-000000000000</a:Id>
<a:LogicalName>activityparty</a:LogicalName>
<a:RelatedEntities />
</a:Entity>
</a:Entities>
<a:EntityName i:nil="true" />
<a:MinActiveRowVersion i:nil="true" />
<a:MoreRecords>false</a:MoreRecords>
<a:PagingCookie i:nil="true" />
<a:TotalRecordCount>0</a:TotalRecordCount>
<a:TotalRecordCountLimitExceeded>false</a:TotalRecordCountLimitExceeded>
</b:value>
</a:KeyValuePairOfstringanyType>
<a:KeyValuePairOfstringanyType>
<b:key>resources</b:key>
<b:value i:type="a:EntityCollection">
<a:Entities>
<a:Entity>
<a:Attributes>
<a:KeyValuePairOfstringanyType>
<b:key>partyid</b:key>
<b:value i:type="a:EntityReference">
<a:Id>3e17fce0-e9cd-e211-866e-00155d143602</a:Id>
<a:LogicalName>systemuser</a:LogicalName>
<a:Name i:nil="true" />
</b:value>
</a:KeyValuePairOfstringanyType>
</a:Attributes>
<a:EntityState i:nil="true" />
<a:FormattedValues />
<a:Id>00000000-0000-0000-0000-000000000000</a:Id>
<a:LogicalName>activityparty</a:LogicalName>
<a:RelatedEntities />
</a:Entity>
</a:Entities>
<a:EntityName i:nil="true" />
<a:MinActiveRowVersion i:nil="true" />
<a:MoreRecords>false</a:MoreRecords>
<a:PagingCookie i:nil="true" />
<a:TotalRecordCount>0</a:TotalRecordCount>
<a:TotalRecordCountLimitExceeded>false</a:TotalRecordCountLimitExceeded>
</b:value>
</a:KeyValuePairOfstringanyType>
</a:Attributes>
<a:EntityState i:nil="true" />
<a:FormattedValues xmlns:b="http://schemas.datacontract.org/2004/07/System.Collections.Generic" />
<a:Id>00000000-0000-0000-0000-000000000000</a:Id>
<a:LogicalName>serviceappointment</a:LogicalName>
<a:RelatedEntities xmlns:b="http://schemas.datacontract.org/2004/07/System.Collections.Generic" />
</entity>
</Create>
</soap:Body>
</soap:Envelope>
it appears the same error occasionally happens when deleting solutions from an organisation so I've had trouble researching the issue. All I've found is this forum post, but it doesn't seem to be resolved.

Answer 1

statecode is a readonly property, you can't set its value when you create a new record.
To set the right value you need to use always a SetStateRequest
http://msdn.microsoft.com/en-us/library/microsoft.crm.sdk.messages.setstaterequest.aspx
Conclusion: first you need to create the record (and it will be in open state) and after change its status to reserved.