That is equally on the cashier. Only thing I can think is they were working together, because that is well within a cashiers limited authority to call bullshit on.
Still, those are weight sensitive and any discrepency has to be overridden. The same with declining bagging. Also, the cashier should be checking the screen, especially when they see high dollar merchandise coming through self check. Usually that has to be checked out in the electronics area only.
Edit: after reading the article, which hurt my brain, I see that LP intentionally let her make the purchases so they could charge her.
Edit: after reading the article, which hurt my brain, I see that LP intentionally let her make the purchases so they could charge her.
http://ktla.com/2017/11/08/woman-rings-up-computer-other-electronics-for-3-70-at-walmart-self-checkout-police-say/