What action should you take to ensure predefined charges in a purchase order?

To ensure that predefined charges are applied in a purchase order, using automatic charges is the best approach. Automatic charges in Dynamics 365 allow for the automatic application of predefined costs based on the setup from the system. This means that whenever a purchase order is created and relevant conditions are met, the system will automatically calculate and add these charges to the order. This functionality streamlines the ordering process, ensures consistency, and reduces the possibility of human error during data entry.

Setting up item charges or establishing vendor charges could also influence charges on a purchase order, but they require manual adjustments or specific configurations that might not automatically apply in every situation. Similarly, calculating sales tax charges is a different focus that addresses taxation rather than predefined charges generally applied to the order.

In short, automatic charges directly facilitate the application of predefined costs as part of the procurement process, which aligns with the goal of ensuring that specific charges are included when processing purchase orders.