Want to sign. Because the loan slip is an important document to confirm the borrower's approval of the loan amount and loan items, the borrower signs to agree to borrow and confirms the loan amount and loan items. If the borrower fails to sign the IOU, the legal effect of the IOU may be affected, and may even be considered invalid. Therefore, it is suggested that in the case of bank transfer, the borrower on the accounting debit note should sign for confirmation.