Setting prices interface on controller (xbox controller)

On the setting an item price on a stash tab. When you go to make the note it shows the "Y" key on the left to set the last price (this is cool) but then to the right hand side of that window it shows the barbarbar symbol or start on the controller but it doesn't tell you what that key does. It "cancels" please put some text buy that key symbol so you know what it is for.

Thanks! I thought the whole time it was Accept what I had entered but it is actually cancelling. very confusing.