Purchase order no invoice with a price
I'm searching a way in ME21N to create a PO with an amount in line item but still I forbid to receive any invoice on this PO.
I've been playing with account assignment and untick "Invoice Receipt" field to force not being able to receive any invoice. However, by unticking it, the line items of my PO become free of charge and I can't put any price in it.
If I remove free of charge, then I can put a price but also able to post invoice on the PO and I don't want to post invoice on PO.