Where are the manual test cases created for customer User Acceptance Testing?

Manual test cases for customer User Acceptance Testing are created in SAP Cloud ALM, a cloud-based application lifecycle management solution that supports SAP S/4HANA Cloud Public Edition implementations. SAP Cloud ALM provides test management apps that allow consultants to document and track all testing activities for both manual and automated test cases in one location. Manual test cases are created in the Test Preparation app based on the finalized solution scope (business processes) and assigned to test plans in the Test Plans app. SAP Cloud ALM also integrates with the SAP S/4HANA Cloud test system and third-party test providers to execute and monitor automated test cases. References = Preparing Test Cases for User Acceptance Testing, Explaining the Test Strategy, User acceptance testing templates