The Validate action validates the contents of a section of the FactBase against a W3C Schema.
The first parameter indicates the XSD to validate against. The XSD file can either be specified directly (schema), or can be located by using an XPath that identifies the XSD filename in the FactBase (XPath to schema).
The second parameter specifies the validation start point, which enables the isolation of specific portions of the FactBase for validation. As the validation action executes, it may generate errors. These errors will be inserted in the specified location in XML format. The format of these errors is: <error id="" col="" line="" desc="" />
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