This service allows you to validate arbitrary XML content against XML Schema (to validate structure) and Schematron (to validate content). It is also offered via a SOAP API and a command-line tool with further information available here. Questions and feedback can be sent to DIGIT-ITB@ec.europa.eu.
This service is powered by the Interoperability Test Bed, a conformance testing service offered by the European Commission's DG DIGIT for projects involved in the delivery of cross-border public services. Find out more here.