>Ok, this is all good but is there a way from a VFP Web Service to respond to the need of that client. Basically, the first parameter received is the XSD file and what I will return need to fit within that specific criteria.
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>My understand so far is that I will have to read that XSD file line by line and define my XML string result line by line as well in order to respect that schema. Or, is there a better way?

What is in the payload? XSD is just a schema. It doesn't guarantee that there's a parser that knows what to do with it. Some parsers are smarter than others - for example, the VS.NET parser for DataSets can take almost any xsd compliant schema and turn it into a DataSet. But the VFP CURSORTOXML parser on the other hand doesn't know how to deal with anything than the very specific structure that VFP uses.

Bottom line is this: If you have people sending you custom schemas to figure out how to deal with the data chances are pretty good that you'll have to hand parse.