受信 じゅしん不能 ふのう通知 つうち要求 ようきゅう表示 ひょうじでしょう
jushinfunōtsūchiyō kyūhyōjideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 受信不能通知要求表示

1. Probably unable to notify receipt.; Likely a request for notification of receipt is impossible.

Polite
Presumptive
Conjecture
Computing