Error during import of XSD file in message mapping

Question

When i try to import an XSD file from desktop during message mapping I am getting a following error 'display problem'.
"Root element not found. Root Schema only describe type defintions. Cannot opent this XSD."
Is there any direct or work around way to import the file?
Any help would be appreciated.
Thanks
Prem

Answer 1

Thanks Alexey
  Let me specify some more detail. I got the following XSD file from a third party vendor. I am using XML spyeditor to edit the file. When i tried to add the global element it says the schema is not validated. How can it fix this?
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
     <xs:include schemaLocation="http://www.ABC.com/schemas/ABCXMLlibrary.xsd"/>
     <xs:complexType name="sesType">
          <xs:sequence>
               <xs:element name="eserviceNumber" type="xs:string">
               <xs:element name="SAPPurchaseOrder" type="SAPPurchaseOrderType" minOccurs="0"/>
               <xs:any namespace="##any" minOccurs="0" maxOccurs="unbounded"/>
          </xs:sequence>
     </xs:complexType>
</xs:schema>
Thanks
Prem