Resetting in-app purchase for non consumable items while testing [iOS] [Flutter]

I am currently in the process of testing in-app purchase for a non-consumable item. I am successfully able to make the purchase, but I want to reset the purchase made so that I can test multiple scenarios. Doing this for Android was simple by issuing a refund but I don't see a similar option of iOS. Is there a way I could reset the existing purchases for a sandbox account?