For which of the following transactions can a down payment request be used?

A down payment request is specifically used in scenarios where an advance payment is required before the delivery of goods or services. This tool is typically utilized in contractual arrangements where the supplier or service provider requests a portion of the total amount upfront as a safeguard against the risk of non-payment, especially in substantial transactions.

The functionality of a down payment request aligns with the processes of managing receivables and payables by ensuring that the financial commitments are formalized ahead of the final transaction. This means that it is not applicable to transactions like late payments, customer payments, or vendor payments because those scenarios involve the processing or settlement of existing obligations rather than the initiation of new ones requiring advance funds.

In essence, a down payment request serves a very targeted purpose—facilitating the collection of initial funds for an order—and that is precisely why it stands out as the suitable transaction type in the context provided.