SAP Message ME190 - Inbound delivery not defined in confirmation control key

Diagnosis
The confirmation control key entered in the purchase order or inscheduling agreement &V1&, item &V2&, does not include a confirmationcategory corresponding to the internal category '2' (shippingnotification/inbound delivery).

Procedure
Change the confirmation control key in the PO or scheduling agreement.(Note that it cannot be changed if a goods receipt has already beenposted).
Change Purchase Order or ChangeScheduling Agreement.
INCLUDE NA_SYSADMIN1 LANGUAGE EN

What_to_do (system administrator)
If necessary, maintain the confirmation control facility inCustomizing.