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:
<?oxygen SCHSchema="percent.sch"?>

The possible errors which might occur during the validation process are presented in the Errors panel at the bottom area of the Oxygen 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 looks for the following information: