In the context of procurement documentation, what is the primary function of an invoice?

The primary function of an invoice is to request payment for goods or services provided. When a supplier delivers products or performs services, they issue an invoice to the buyer that details the items supplied, quantities, prices, and terms of payment. This document serves as an official record of the transaction and facilitates the financial process between the buyer and supplier by formally asking for payment.

An invoice acts as a crucial tool in managing accounts receivable, allowing buyers to verify the received goods or services against what was ordered. While it provides necessary information that can confirm delivery and aligns with the terms agreed upon, its central role is to communicate the expectation of payment.

Other options, while related to logistics and contractual agreements, do not capture the invoice's main purpose in financial transactions. The confirmation of delivery, legal contracts, and outlines of delivery schedules are important in their own rights but serve different operational functions within procurement.