Technically you can't, as being inadvertent means you lack the mens rea to commit theft. More colloquially it is used to describe any accidents in your favor w

Technically you can't, as being inadvertent means you lack the mens rea to commit theft. More colloquially it is used to describe any accidents in your favor with terms of paying for purchases. Forgetting to scan an item, accidentally having two items get stuck together and only scanning one, and similar incidents.