Sai,
The problem might be with the Document, please check if that document has references to certain types defined in an obsolete namespace: Fixing the broken references will help to resolve the DT-100 error and the document will get published successfully.
Also try regenerating the document type using XSD in a new package. Before publishing sync the document to broker.
Let me know your results.
#Integration-Server-and-ESB#webMethods#webMethods-General