1. An computer-implemented system that facilitates converting structured documents to XML format; comprising a processor executing the following components stored in computer readable storage media: an integration engine that receives a structured document and translates the document to XML format; a parser component that parses the structured document according to delimiter information associated with the structured document; a schema generation component that configures an XML schema definition (XSD) from a delimited flat-file HL 7 (Health Level 7) message based at least in part on delimiter information of the message by the parsing component and adds validation annotations to the XSD to generate a value-added XSD (VAX), the validation annotations are associated with declarative validation rules with regard to respective nodes in an XSD; a validation component that validates the message at run time, the validation is performed by reading declarative rules and extracting data related to specific node associated with the annotation; and an acknowledgement generation component that generates an acknowledgement related to each of message receipt and message validation and transmits the acknowledgement to a source application over a socket connect over which the message was transmitted from the source application.