Trying to create message mapping between a cXML dtd and orders idoc. Downloaded the 'invoicedetail.dtd' from cxml.org and created an 'external definiton' for this. But, while trying to create message interface, no messages are shown from the external def in IR. Tried will all the categories 'From First ELEMENT', 'from DOCTYPE', but still couldnt see any message for this dtd.
In WSDL tab of external def, I see the following error.
Unable to convert imported document to WSDL
Reason: Name "ds:Signature" is incorrect
Check the selected category "