Each row in your table is a transaction, but your table also includes things like shipping fees. While there is a shipping feel listed for each transaction, the number repeats for every row because it actually only makes sense for the order as a whole. Summing up that column would double, triple, and quadruple count the fee resulting in wildly incorrect answers. In this video I’m going to not only walk you through the surprisingly simple way this problem is solved, I’ll also walk you through how to understand the solution and even use DAX to visualize it on the page.