発信 はっしん しゃ要求 ようきゅう代行 だいこう受信 じゅしん しゃであれば
hasshinshayō kyūdaikōjushinshadeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 発信者要求代行受信者

1. If the originator requests on behalf of the recipient.; If the originator is acting as a proxy for the recipient.

Ba Conditional
Computing