message getOrgModelRootsRequest
parts 
parameters
element om:getOrgModelRoots
used by 
Operation getOrgModelRoots in PortType OrgModelService
source  
<wsdl:message name="getOrgModelRootsRequest">
  <wsdl:part name="parameters" element="om:getOrgModelRoots"/>
</wsdl:message>

WSDL documentation generated by XMLSpy WSDL Editor http://www.altova.com/xmlspy