打診 だしん発生 はっせい げん認証 にんしょうじゃないです
dashinhasseigennin shōjanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 打診発生源認証

1. Not investigating the source of the problem.; It's not a source authentication.

Negative
Polite
Casual Register
Computing