noun
operational mistake; operator error
Abbreviation of オペレーションミス, used in business, IT, and medical contexts for a mistake made during an operation or procedure.
システム障害の原因はオペミスだった。
The cause of the system failure was an operational mistake.
オペミスを防ぐためにチェックリストを導入した。
We introduced a checklist to prevent operator errors.