動作 どうさ有効 ゆうこう期間 きかんじゃないです
dōsayūkōkikanjanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 動作有効期間

1. It's not within the valid operation period.; It's not during the effective period.

Negative
Polite
Casual Register
Computing