This document describes how to use Mule ESB to convert a CSV file to XML format. It includes the source code for a Mule flow that uses a file inbound endpoint to read a CSV file, transforms the CSV payload into XML using DataWeave, and writes the XML output to a file. Sample CSV and generated XML files are provided for demonstration purposes. The flow reads a CSV, transforms each row into nested XML elements representing users and their addresses, and outputs the transformed XML.