Can I exchange an item for a buyer, like a different shirt size?

Yes.

1. Go to your campaign’s Results tab and open the Transactions report.
2. Open the order and click Exchange Item on the item you want to swap.
3. Pick the new product, option, and quantity, add a reason, and save.

Your inventory updates automatically. The returned item goes back in stock, and the new item comes out of stock.

An exchange doesn’t move any money. If the new item costs less, issue a separate partial refund for the difference. Answers to product questions don’t carry over, so collect any new details yourself.