動作 どうさ有効 ゆうこう期間 きかんではありませんでした
dōsayūkōkikandewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 動作有効期間

1. Was not within the valid operation period.; Was not within the effective period.

Past/Perfective
Negative
Polite
Formal Register
Computing