I am Working on a Payment get way I need some advice, I will explain the scenario I have a invoice generated from Merchants App and Payment has been done by user( Split payment). I need to create a refund structure Where merchants can refund individual item, some percentage of the total billing amount, to a particular user.
Now my concerns are how do merchants recognize a particular User to refund.
Basically my question in how to create a UX flow for split Payment?