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.
+1 Just posted this same question on another thread before arriving at this post. Would be hugely beneficial if we could access return reasons at the line item level within the API. Also had a call with a Shopify rep who may have an answer for all of us. Will share once available.
We are also in need of the ability to include the line-item level reason for a return. Please let us know how that could be included in the refunds.json data.
We also need this data in the API or available to be analyzed within Shopify. Right now, we’re collecting data that we can’t do anything with. Please and thank you!