Which utility supports interfaces that use an XML message structure?

The utility that supports interfaces using an XML message structure is the message viewer. This tool is designed to display and facilitate the examination of messages, particularly those formatted in XML. Since XML is a widely used markup language for encoding documents in a format that is both human-readable and machine-readable, the message viewer effectively parses these XML structures for analysis.

The message viewer's capability to handle XML allows users to visualize the hierarchical data and elements contained within XML messages, making it an essential tool for debug processes and validation of message contents being sent or received. This feature is crucial when dealing with interfaces where XML is the standard, as it enables users to ensure that the data exchanged aligns with the expected schema and business rules.

Other options, such as the message validator, while involved in validating message formats and content, may not specifically focus on displaying XML structure for user interpretation. Similarly, data synchronization tools and message archivers serve different purposes. The former is mainly focused on the synchronization of data between systems, while the latter focuses on storing and retrieving messages rather than parsing and displaying them. Thus, the message viewer stands out as the right choice due to its specific function related to XML message structures.