This online tool is designed to provide a selection of validation checks on BPMN 2.0 models: schema validation, "style rule" validation according to the principles of my book BPMN Method and Style 2nd edition, and BPMN-I Profile validation, also described in the book. Style rule validation helps modelers maximize clarity of process logic based on information in the diagram alone. It is built into itp commerce Process Modeler for Visio, but the online tool makes it available to serializations exported by other software. BPMN-I Profile validation is meant to assist tool vendors in creating BPMN model exports that are interoperable with other BPMN tools. To use it, you must first export well-formed and schema-valid BPMN 2.0 xml from your modeling tool. The BPMN-I validator can check for these prerequisites if you are not sure.