After you have your success criteria and indicators, you need to collect and analyze your data to evaluate your ERP implementation performance. You should collect data from various sources, such as surveys, interviews, reports, dashboards, or benchmarks, to get a comprehensive and accurate picture of your ERP system impact. You should also analyze your data using appropriate methods, such as descriptive, inferential, or predictive statistics, to identify patterns, trends, gaps, or opportunities. You should compare your data with your baseline, targets, or best practices, to assess how well you have met your success criteria and indicators.