Prevent 3rd Party PO Create for SO with Delivery Block

Question

We use Delivery Blocks on our Sales Orders as temporary blocks, for example if our Customer has sent a potentially duplicate order. However, the 3rd Party PO creation process ignores the Delivery Block (as you would expect, there's no Delivery), but we want to prevent the PO from being created. Our preference is to prevent the PO from converting the Req, rather than do something to the Req, or change the item category etc, as this leaves us with a much cleaner process if the order IS required. In that scenario, the DB could be removed, and the next ME59n batch job would pickup the open Req.
We have activated User exit ME590001 and included a check for the order DB, and this works for POs created via ME59n. However, the vast majority of our 3rd Party POs are created via Workflow process, and the exit we created does not trigger.
Does anyone know of a userexit we could use that would work any time a PO Req is converted to a PO, regardless if it's ME59n, ME21n, or Workflow etc, i.e. at the application level ?
Thanks, Paul.

Answer 1

Hi Paul,
You may try enhancement MM06E005.
Thanks and regards,
Polly