External definition error

Question

I am trying to import the following XSD as an External Definition in Repository.
I am getting the following Error. Please help me.
Error
Activation of the change list canceled
Check result for External Definition Request | http://ABC.COM: Document check found errors 
Cause: The loaded document does not contain valid XML 
Error when parsing XML document com.sap.aii.utilxi.xml.xdom.XDOMException$ParseError: Error when parsing the XML document (External entity from address http://xml.cxml.org/schemas/cXML/1.2.014/cXML.dtd in XML document is not supported
XSD
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE cXML SYSTEM "http://xml.cxml.org/schemas/cXML/1.2.014/cXML.dtd">
<cXML payloadID="[email protected]"
      timestamp="2005-01-13T00:00:16+00:00">
   <Header>
      <From>
         <Credential domain="NetworkId">
            <Identity>AN13000000259</Identity>
         </Credential>
      </From>
      <To>
         <Credential domain="NetworkId">
            <Identity>AN01000000001</Identity>
         </Credential>
      </To>
      <Sender>
         <Credential domain="NetworkId">
            <Identity>AN13000000259</Identity>
            <SharedSecret>abracadabra</SharedSecret>
         </Credential>
         <UserAgent>Our Procurement System 3.0</UserAgent>
     </Sender>
   </Header>
   <Request>
      <GetPendingRequest lastReceivedTimestamp="2005-01-12T00:00:25+00:00"
            maxMessages="20">
         <MessageType>StatusUpdateRequest</MessageType>
      </GetPendingRequest>
   </Request>
</cXML>

Answer 1

Hi,
The structure that you posted dose'nt look like XSD its like a XML. Actually you have created a Schema based on DTD and not XSD. Did you use Altova to create this, then please select W3Schema instead of DTD while creating it.
The following is the strucutre I got when I created using the XML you have posted.
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
     <xs:complexType name="CredentialType">
          <xs:sequence>
               <xs:element ref="Identity"/>
               <xs:element name="SharedSecret" type="xs:string" minOccurs="0"/>
          </xs:sequence>
          <xs:attribute name="domain" type="xs:string" use="required"/>
     </xs:complexType>
     <xs:element name="Identity" type="xs:string"/>
     <xs:element name="cXML">
          <xs:complexType>
               <xs:sequence>
                    <xs:element name="Header">
                         <xs:complexType>
                              <xs:sequence>
                                   <xs:element name="From">
                                        <xs:complexType>
                                             <xs:sequence>
                                                  <xs:element name="Credential" type="CredentialType"/>
                                             </xs:sequence>
                                        </xs:complexType>
                                   </xs:element>
                                   <xs:element name="To">
                                        <xs:complexType>
                                             <xs:sequence>
                                                  <xs:element name="Credential" type="CredentialType"/>
                                             </xs:sequence>
                                        </xs:complexType>
                                   </xs:element>
                                   <xs:element name="Sender">
                                        <xs:complexType>
                                             <xs:sequence>
                                                  <xs:element name="Credential" type="CredentialType"/>
                                                  <xs:element name="UserAgent" type="xs:string"/>
                                             </xs:sequence>
                                        </xs:complexType>
                                   </xs:element>
                              </xs:sequence>
                         </xs:complexType>
                    </xs:element>
                    <xs:element name="Request">
                         <xs:complexType>
                              <xs:sequence>
                                   <xs:element name="GetPendingRequest">
                                        <xs:complexType>
                                             <xs:sequence>
                                                  <xs:element name="MessageType" type="xs:string"/>
                                             </xs:sequence>
                                             <xs:attribute name="lastReceivedTimestamp" type="xs:string" use="required"/>
                                             <xs:attribute name="maxMessages" type="xs:string" use="required"/>
                                        </xs:complexType>
                                   </xs:element>
                              </xs:sequence>
                         </xs:complexType>
                    </xs:element>
               </xs:sequence>
               <xs:attribute name="payloadID" type="xs:string" use="required"/>
               <xs:attribute name="timestamp" type="xs:string" use="required"/>
          </xs:complexType>
     </xs:element>
</xs:schema>
Thanks,
Prakash