Facebook Attribution is being deprecated by Facebook in August 2021, you can read more here.
My "Direct" Conversions are not matching the pie chart in the Attribution UI
When looking at the pie chart in the Facebook Attribution UI it will display both "Direct" and "Unattributed" conversions. The API only returns "Direct" conversions which is what you will see in Funnel. The "Direct" conversions should match the "Direct" conversions visible when looking at a custom report in the Facebook Attribution UI.