As an investment firm, your company is aiming to demonstrate its adherence to the Global Investment Performance Standards (GIPS). A critical aspect of these standards is the definition and inclusion of all portfolios in claimed performance presentations. Your CFO has raised a concern about the historical performance data used for marketing new funds. One point he mentions is the need to clearly distinguish between discretionary and non-discretionary portfolios in performance metrics. Which of the following statements about GIPS key concepts is most accurate in this context?