Impossibility of original performance, a law term in contrast to impossibility of subsequent performance, is one of impossibility of performance when a contract has been signed.

自始履行不能是相对嗣后履行不能的法律术语，主要是指合同签订之时就已存在的履行不能。

youdao

Impossibility of original performance, a law term in contrast to impossibility of subsequent performance, is one of impossibility of performance when a contract has been signed.

自始履行不能是相对嗣后履行不能的法律术语，主要是指合同签订之时就已存在的履行不能。

youdao