arrangement mistake; booking error; bungled preparations
Used when someone makes a mistake in arranging, coordinating, or booking something, such as travel, reservations, or logistics. Often implies a human error in planning.
Due to a booking mistake, the hotel room hadn't been reserved.
There was an arrangement error, and the meeting materials didn't arrive.
Compound of 手配 (arrangement, booking) and ミス (mistake). The exact origin is uncertain, but it likely emerged in business or travel contexts.