Diagnosis
You are entering an ordering transaction involving a vendor to whom aplant has been assigned. Normally, materials would be supplied by oneplant to another in such a transaction.
This process involves a delivery and billing document in the SD system.The PO for this appears directly in the delivery due list of theissuing plant (vendor) and therefore does not need to be transmitted.
However, items without a material master record cannot appear in thedelivery due list.

Procedure
Items without a material master record can only be ordered from vendorswithout a plant assignment.