本番 ほんばん運用 うんようではありませんでした
homban'un'yōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 本番運用

1. It was not in production.; It was not in live operation.; It was not the real thing.

Past/Perfective
Negative
Polite
Formal Register
Computing