Accurate documentation is essential for refrigerant charge verification to ensure compliance with regulations, track system performance, and facilitate future maintenance. Documentation should include details like the type and amount of refrigerant used, charging procedures, test results, and any issues or repairs performed. Technicians should also maintain records of system performance data, such as temperature, pressure, and energy consumption, to enable trend analysis and optimization. By maintaining thorough documentation, technicians can ensure accountability, improve system performance, and reduce downtime.