The Legislative Guide notes the difficulties of proving subjective elements of avoidance requirements, such as the intention of the debtor when entering into the transaction and the subjective knowledge of the counterparty.
《立法指南》列出了在证明撤销要求的主观要件上存在的种种困难，例如债务人订立交易时的意图以及对应方主观上是否知情。