The scenario describes a situation where there is a discrepancy between the system users' perception and the system performance statistics regarding the new payments system. The BA needs to demonstrate to the users how the new system is performing and address their complaint. The best way to do this is to collect system metrics and communicate the results in an understandable format. System metrics are quantitative measures that indicate the performance, quality, and efficiency of the system. Communicating the results in an understandable format means using clear and simple language, charts, graphs, or tables to present the data and explain the benefits of the new system.
References: The answer and explanation are consistent with the CCBA® Handbook and the IIBA® website, which provide the details and best practices for the solution evaluation knowledge area, including the task of measure solution performance12. The CCBA® resources also describe the techniques and tools that can be used to perform each task in the business analysis process, such as system metrics and communication