You are entering a supplier invoice for a purchase order that has been delivered. What information can you use as a reference to post the invoice?

Using the purchase order number as a reference when entering a supplier invoice is critical because it establishes a direct link between the goods or services received and the contract that governs the transaction. The purchase order number acts as a unique identifier that connects the invoice to the original order, ensuring accurate record-keeping and facilitating easier reconciliation between the invoice and the associated delivery.

This accuracy is crucial in financial processes, as it helps in verifying that the products or services being billed match what was ordered, thus reducing the risk of errors and disputes. It also enhances the efficiency of processing invoices by allowing the system to automatically retrieve relevant details associated with the purchase order, such as prices, quantities, and terms previously negotiated with the supplier.

References such as the delivery note number, supplier's tax ID, or shipping address, while relevant in their own contexts, do not provide the same level of direct linkage to the terms of the agreement formed through the purchase order, making them less preferable for this specific purpose of posting the invoice.