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 ひょうじだったら
jushinfunōtsūchiyō kyūhyōjidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 受信不能通知要求表示

1. If the request to notify of inability to receive were…; If a request to inform of reception failure was…

Tara Conditional
Computing