3. If the debtor receives more than one payment instruction relating to a single assignment of the same receivable by the same assignor, the debtor is discharged by paying in accordance with the last payment instruction received from the assignee before payment.
3. 债务人收到关于同一转让人对相同应收款单独一次转让的不止一份付款指示的，债务人根据付款前收到的受让人最后一份付款指示付款而解除其义务。