<SOAP-ENV:Header>
<tns:RequestHeader>
<tns:clientCustomerId>xxx</tns:clientCustomerId>
<tns:developerToken>xxx</tns:developerToken>
<tns:userAgent>xxx</tns:userAgent>
<tns:validateOnly>false</tns:validateOnly>
<tns:partialFailure>false</tns:partialFailure>
</tns:RequestHeader>
</SOAP-ENV:Header>
<ns1:Body>
<ns0:get>
<ns0:selector>
<ns0:fields>CampaignId</ns0:fields>
<ns0:fields>Extensions</ns0:fields>
<ns0:fields>ExtensionType</ns0:fields>
</ns0:selector>
</ns0:get>
</ns1:Body>
</SOAP-ENV:Envelope>
Am I missing something obvious as to why this is the case?