This case study outlines Holcim's implementation of the enhancement package EHP8 for SAP ERP 6.0 and the associated migration of major processes to Fiori. The initiative involved a complex rollout impacting over 7,000 PCs and laptops, necessitating comprehensive testing to ensure operational continuity. Holcim utilized Panaya's tools to streamline and manage the user acceptance testing (UAT) process, which involved 300 stakeholders across multiple business units and time zones. The testing process was divided into manageable steps, with tasks assigned to specific testers, enhancing collaboration between business and IT. Panaya's capabilities allowed for the execution of over 6,500 testing scenarios with an average testing time of 4 minutes, resulting in zero disruption to daily operations. The case study also discusses the anticipated future use of Panaya's codeless test automation tool to further optimize testing efforts.