How to say “Someone hung the stockroom sign on the wrong door, so the delivery driver came in here.” in Japanese
In Japanese
誰かが倉庫の札を別のドアにかけたせいで、配達の人がこっちに入ってきちゃったよ。
Dareka ga sōko no fuda o betsu no doa ni kaketa sei de, haitatsu no hito ga kotchi ni haitte kichatta yo.