Diagnosis
You have entered a date in the field 'Delivery date group'. However,none of the items you are processing is assigned to a delivery group.Also, no agreement was made for a complete delivery.

System Response
The system does not accept the date you have entered.

Procedure
Create the delivery groups as required by combining the appropriateitems either using a delivery group or by marking the field 'Completedelivery.' The correlation takes place when you press ENTER or when yousave the sales order.