New segment item created with 'Unspecified' state

While trying to create a new item of segment type using im createsegment command through SoapUI, I get the state of the newly created item as 'Unspecified'. Ideally, the new item created should automatically move to the state 'Proposed' as seen in the workflow diagram below but it's not happening.

In the request below, the type 'Requirement Document' is a Segment type. I get a successful response and the item is created but the state is 'Unspecified' rather than 'Proposed'. Is this behaviour expected or are there any configuration changes that I need to do so that the new item I create moves to the 'Proposed' state automatically when it is created?

<ns2:Envelope xmlns:ns4="http://webservice.mks.com/2009/Generic" xmlns:ns3="http://webservice.mks.com/2009/Generic/schema" xmlns:ns2="http://schemas.xmlsoap.org/soap/envelope/">
 <ns2:Header/>
 <ns2:Body>
 <ns4:command>
 <arg0>
 <ns3:Username>myusername</ns3:Username>
 <ns3:Password>mypassword</ns3:Password>
 <ns3:Application>im</ns3:Application>
 <ns3:Command>createsegment</ns3:Command>
 <ns3:Option Name="type">Requirement Document</ns3:Option>
 <ns3:Option Name="field">Project=/MyProject</ns3:Option>
 <ns3:DateTimeFormat>d-MMM-yyyy h:mm:ss a</ns3:DateTimeFormat>
 </arg0>
 </ns4:command>
 </ns2:Body>
</ns2:Envelope>

I'm working on version 10.8 if that helps, and I've checked the permissions and the mandatory fields to see that they are being populated properly.