Mix-up (noun)

A confusion or an error that results from things being mixed or arranged incorrectly.

Origin:

From the late 19th century word mix-up, which is a combination of the verb mix and the noun up.

Examples:

1. There was a mix-up with the reservations at the hotel.
2. The mix-up in the lab resulted in the wrong experiment being conducted.
3. The mix-up at the store led to the wrong order being delivered.
4. The mix-up in the schedule caused the players to miss their game.
5. The mix-up in the shipping caused the packages to be sent to the wrong addresses.