When using the checkout API, I am charging a service charge titled, “Delivery Fee”.
The fee is applied correctly; however, it is not noted in the itemized checkout list.
Any suggestions on how to display this service charge on the checkout page?
Currently with the Checkout API the service charge doesn’t show in the itemized list during the checkout. We’re constantly working to improve our features based on feedback like this, so I’ll be sure to share your request to the API product team. 
We are experiencing the same behavior with the Orders API UpdateOrder endpoint.
The service charge is correctly applied to the order and included in the total. It is also visible in the Square POS app. However, the service charge does not appear as an individual line item in the itemized checkout display.
Could you please confirm whether this is a known limitation of service charges added through UpdateOrder, or whether there is a recommended way to make the service charge visible in the itemized checkout?