A customer made several purchases with the store and asked for a discount on shipping. We agreed to $15 off the cost of shipping and we applied the discount by capturing $15 less than we were allowed on the customer's credit card. (Eg/ Item and shipping were $200, we captured $185 from their card). Now I have a bookkeeping problem because this order has only been 'partially paid'.
How can I apply a post-payment discount so that we can clear the partial payment?
Here's the answer I got from Shopify support. (It doesn't solve the problem of all the outstanding partially paid orders and the solution going forward adds six new steps to every order in question. That's not a solution.)
"Therefore, as a workaround, I would highly suggest for you to create a draft order with the exact shipping cost moving forward:
Alternatively, you can also use a third party app called Split ‑ Partial Payments that allows your customers to pay for a single order in different ways. We can also reach out to the developers of this app should you have further queries about its app functionalities and features."