Iowa Code § 554.12304
If the sender of a payment order that is erroneously executed as stated in section 554.12303 receives notification from the receiving bank that the order was executed or that the sender's account was debited with respect to the order, the sender has a duty to exercise ordinary care to determine, on the basis of information available to the sender, that the order was erroneously executed and to notify the bank of the relevant facts within a reasonable time not exceeding ninety days after the notification from the bank is received by the sender. If the sender fails to perform that duty, the bank is not obligated to pay interest on any amount refundable to the sender under section 554.12402, subsection 4, for the period before the bank learns of the execution error. The bank is not entitled to any recovery from the sender as a result of the failure by the sender to perform the duty stated in this section.
Iowa Code § 554.12304
92 Acts, ch 1146, §24
Referred to in §554.12402