Shopify has a "return reason" field when returning items on Shopify web (screenshot below)
However, I do not think this data is made available anywhere in the API. I verified by trying to get to the API details but only the "refund note" seems to be available.
I think this is because the POS does not have this drop-down feature when returning (also see - https://community.shopify.com/c/Technical-Q-A/Is-there-a-way-to-include-an-option-to-select-a-reason...)
Many merchants use this feature regularly and there doesn't seem to be any place where it can be aggregated and analyzed on.
Can this data be made available as a part of the order API?
Thank you for looking into this. Really appreciate it!
I think you are searching for https://shopify.dev/docs/admin-api/rest/reference/orders/refund#create-2021-01(return)
Maybe this post can help you => https://community.shopify.com/c/Shopify-APIs-SDKs/Return-API/m-p/642940#M43569