You cannot create a Purchase Order or an Inventory Receipt without a specific Product.

What you can do is create a Purchase Order with a generic product, and when you know what you will receive, edit the Purchase Order and adjust it to what you have received.

Example:

1) Confirm a Purchase Order for 10,000 Generic Apples.

2) When the fruit comes in, edit the Purchase Order:

• Change the quantity of Generic Apples down to 0
• Add a new line for Green Apples with a quantity of 7,000
• Add a new line for Red Apples with a quantity of 3,000

The first Inventory Receipt (for 10,000 Generic Apples) will be cancelled.

A second Inventory Receipt (for 7,000 Green Apples and 3,000 Red Apples) will be automatically created.

3) Receive against the second Inventory Receipt.

This will ensure that the Received quantity is correctly updated on each Purchase Order line so that your Vendor Bill will match correctly during billing.