I have built a process that sends an order to CheckOuts that includes service_charges, all the line items and taxes show on the CheckOut page when the user gets there, but the services charges do not (though their values DO participate in the total calculation properly). Is there a way that the services charges can show on the CheckOut page?
At this time the service charge doesn’t show in the Square checkout page. 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. 
Thank you, Perhaps there is a different solution for adding a Shipping Charge to the CheckOut page than using the service_charges?