Validate an XML Document

To validate an XML document against a Schematron schema, invoke the Validate action either from the application's toolbar or from the Project view's contextual menu. If you would like to add a persistence association between your Schematron rules and the current edited XML document, use the Associate Schema action. A custom processing instruction is added into the document and the validation process will take into account the Schematron rules:
<?xml-model href="percent.sch" type="application/xml" schematypens="http://purl.oclc.org/dsdl/schematron"?>

The possible errors which might occur during the validation process are presented in the Errors panel at the bottom area of the Oxygen XML Editor plugin window. Each error is flagged with a severity level, which Errors are flagged with a security level, which can be one of warning, error, fatal or info.

To set a severity level, Oxygen XML Editor plugin looks for the following information: