Should No-Takeback Option Be Default?

Just curious, does anybody know what message appears, if any, when a player requests a takeback and the opponent has the takeback request allowance turned off? Does it say "this player does not accept takebacks on rated games" or ...what?

Takebacks are petty. Just lose. It's ok. We all do it.

@killF7 I don't think it gives you the option to request a takeback if your opponent has it turned off.

Thanks. Well that's good then. My first game here my opponent blundered their queen while in a losing position. I declined the request, but felt bad about it because I'm a sucker. So I immediately went and turned that feature off!