What do you mean by three way matching? Is this the function for which I'd have to switch to Enterprise Odoo?

Where is the shortcut? When I create a purchase order, I have to choose/create the ordered products and that leads to the receipt and the vendor bill.

When I create a manual Goods receipt entry and a vendor bill, that wouldn't save any time, wouldn't it?

How do you use OCR? On the Odoo-side, or do you run OCR over your bills, convert them and load it into Odoo afterwards?

- You did not mention your version. I don't know if 'Three way matching' exist in community version. Three way matching check that your invoice matches Purchase order and goods receipt. Can be overridden, yes.

- The short cut was to avoid purchase order, but still have a goods receipt. Goods receipt are mandatory if you manage inventory. Else you don't need it. (But if you create a purchase order with consumable product, goods receipt must be registered. Also best practice)

-You can register Vendor bill without any goods receipt, and without any products.

- OCR is included in Odoo for incoming vendor bills. Option to activate under settings in Accounting. In Enterprise version at least.

Final comment: Odoo got by default Best pratice business processes, that are recommended to follow. Also Odoo provide quite a lot of user documentation and videos of how the processes are ment to work. Recommended to spend time on.

I checked - 3-way matching is "Enterprise-only". Sad to hear, I use Odoo Community 12.

If I follow the best practice: 1.) create purchase order 2.) create receipt of products 3.) create vendor bill - isn't it also 3-way matching?

You mention Vendor bill without goods receipt and products. That is what I did first following what I thought could be a logic workflow. I created the vendor bill, added all ordered products and finally got a "copy" of the original vendor bill including all correct prices and quantities. I thought, I could derive from that the receipt for my inventory, but it seems to be wrong way.

Thanks a lot for your assistance. I already spent some time watching videos and reading, but the separation of community and enterprise doesn't make it very easy because more often, I find out that the described features are only available on enterprise.

Only a purchase order will create the link between goods receipt and vendor bill. Be also aware of the accounting for stock manage products. They got a value, and there should be an account set to post profit / loss on price differencies. It will use the price from the purchase order when you do goods receipt and the price form the invoice when you post the vendor bill. So using both these, you COGS (Cost Of Goods Sold) correct.