エラーの検出 けんしゅつ訂正 ていせいじゃありませんでした
erāno kenshu tsuto teiseijārimasendeshita

Noun
Desu Copula

The polite, past negative form of エラーの検出と訂正

1. Was not error detection and correction.; Was not detecting and correcting errors.

Past/Perfective
Negative
Polite
Terminal Form
Computing