If you are unsure of the process workflow for purchasing, here's a quick guide to purchase orders. First, the purchase order usually contains the buyer's contact information, the seller's contact information, a list of items being purchased, quantities, prices, shipping details, and other important information.
Once the buyer has received and reviewed the purchase order, they will send an invoice to the seller. The invoice will contain all of the same information as the purchase order, as well as the total amount due. The seller will then have a record of what was purchased, when it was purchased, and how much is owed.
The buyer will typically make payment to the seller within 30 days of receiving the invoice. Once payment has been made, the seller will ship the goods to the buyer. The buyer will then receive the goods and complete the transaction. Purchase workflows vary from company to company and are typically managed in purchased software for business and manufacturing management.