Is there any update on this?
At this time there aren’t any additional updates on this particular feature request. 
Hi Bryan, is there any update on this? or any other workaround to add this feature?
I’d love to add support for this long-awaited feature! Just tested a coupon QR code created from the dashboard on the Square for Retail POS app and worked like a charm, so being able to programmatically create a discount code would be so ideal to support this workflow.