I'm admittedly not used to thinking at the management scale of these sort of big-box retailers, but I'd think "we can't systemically trust our store managers to

I'm admittedly not used to thinking at the management scale of these sort of big-box retailers, but I'd think "we can't systemically trust our store managers to not commit fraud" is on its own a large problem that merits solving outside of trying to plug all potential fraud vectors.