Hello there, @AliciaR270.

You can use another product or item to successfully save your purchase order. I'll show you how to do it.

1. Go to the Plus icon.
2. Click Purchase Orders.
3. In the Vendor drop-down, select the vendor you'd like to create a purchase order for. You can also select Add New to add a new vendor.
4. Fill out the rest of the fields, and choose another product or items you'd like to order.
5. Select Save & Close.

In the meantime, the purchase order (PO) is a commercial document and first official offer issued by a buyer to a seller indicating types, quantities, and agreed prices for products or services.

For more reference, you can read these articles below:

• Create a purchase order.
• How to add a preferred vendor and create a purchase order using that preferred vendor.

Feel free to click the Reply button if you have other questions. I’m always here to help.