If the IS document type accurately represents the content model for the complex type from which it was created (the Model type property value is not “Unordered”), when Integration Server converts an XML node to a document (IData), Integration Server matches up the contents of an element in the XML node with the content model of the IS document type. If a mismatch occurs and Integration Server is unable to map the XML node contents to the IS document type, Integration Server appends the remaining data to the resulting document (IData). Integration Server stops attempting to map the XML node content to a field in the IS document type. This mismatch does not result in an error at the time the document is created. However, the document would fail validation by the pub.schema:validate service.