Which SAP UI technology is used for the Report and Repair Malfunction app?

 The Report and Repair Malfunction app is a Fiori app that uses SAPUI5 as the UI technology. SAPUI5 is a modern, HTML5-based, JavaScript UI library that enables developers to create rich and responsive web applications. Web Dynpro, SAP GUI for HTML, and Business Server Pages are older UI technologies that are not used for Fiori apps. References:

Report and Repair Malfunction | SAP Help Portal

First Fiori App for Maintenance Technician: “Report and Repair Malfunction” for SAP S/4HANA Cloud 1708 and 1709 | SAP Blogs