[VE][187] Error Message Feedback

Error [187]: "no document type declaration; will parse without validation"
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If using XML Schema on .xml documents, instead of using a DTD, the 
validator will give an "error" that there is no DTD.
I thought XML Schema was an "alternative" and "future replacememt" of 
DTD's in .xml documents?

I think the validator needs to be updates to identify when a XML Schema 
is being used so it doesn't give the "no document type declaration 
found" error message.