Diagnosis
In Release DI46B and DI46C1, the field Automatic PO Determination
controlled purchase order determination and enabled you to createinbound deliveries without a reference to a purchase order.Inbound deliveries on hold(introduced in Release DI46C2) include inbound deliveries which do notrefer to a purchase order. There is an extra field for controlling thecreation of inbound deliveries on hold.
If there are old settings in the system, these obsolete values areinterpreted in a way which allows creating inbound deliveries on hold.

System Response
Saving the delivery type is not permitted.

Procedure
Select a valid value, and maintain the settings for inbound deliverieson hold.