Info about if/why a order was returned/refunded

[t0gepi]

I‘m trying to figure out if an order got sent back for a particular reason (refund) or without particular reason (returned).

So far, I haven’t come further than retrieving financialEventGroups from the finances api.
From that, I retrieved financialEvents and from that I retrieved the refundsList.

It does not give any information about why it was refunded.

This information is important to me since the shipping costs should not be refunded if the order was returned without particular reason.

After hours of reading through the docs and the internet, I didn’t find anything helpful