It depends on where you start the refund. From the terminal's Orders screen, refunding a meal requires picking a Refund Reason from a list first — the "Refund Meals" button stays disabled until you select one, and there's an optional Update Stock toggle to put the item back into inventory. Refunding from Transactions (full, custom, or a line-item refund there) or from Admin > Customer Orders does not show or require a refund reason. Refund reasons themselves are a separate, admin-managed lookup list; see the "How to create a refund reason" help article for setting those up.