due bill

n.
A written acknowledgment of indebtedness to a particular party but not payable to the party's order or transferable by endorsement.

A financial instrument used to document and identify the seller's obligation to deliver securities sold to the buyer.

Investopedia Says:
For example, a buyer that purchases a stock ex-dividend, but before the dividend is paid, would provide a due-bill stating that the dividend payment should belong to the seller.

Bill submitted by a Common Carrier for additional charges that were not paid with the freight bill.