The setting is in the "General Information" tab for each product:

I don't see that option here. I even looked in studio for hidden parts but nothing for that. The only place that has something close is the purchase tab - control policy which is set to received quantities.

Hi,

Even if you set Sales → Invoicing Policy = “Invoice what is delivered”, there are two additional things that control the behavior:

Product-level invoicing policy

Each product has its own setting:

Sales → Products → Open product → Sales tab → Invoicing Policy.

If it’s set to Ordered quantities, the invoice will always use the full Sales Order qty, regardless of delivery.

If it’s set to Delivered quantities, the invoice will use only what has been validated in the delivery order.

Hope it helps.