¿Cómo se puede determinar si los valores NULL (nulo) son el resultado de umbrales de agregación o una ocurrencia natural dentro de tu reporte?

The "Append aggregation threshold columns" option in the Query Editor is the correct method because it explicitly adds columns to your query results that indicate whether a row was suppressed due to aggregation thresholds. This allows you to directly see if a NULL value is a result of data suppression for privacy reasons (thresholding) or if it's a genuine absence of data in the source. Running the report multiple times (second option) is inefficient and unreliable for this specific diagnosis. Checking schema thresholds (first option) only tells you the rules, not which specific data points were affected. The statement that NULLs don't occur naturally (third option) is incorrect; NULLs can naturally exist in data when information is missing.