SAP Message CO831 - No default value maintained for op. generation for order type &1 (mat &3)

Diagnosis
You are creating an order for which the system can find no validrouting. When generating an operation the system cannot find any defaultvalue for the order type &V1& in plant &V2&.
The problem occurred during creation of an order for material &V3&.

System Response
The system reacts with a termination since you cannot create an orderwithout an operation and the data required to generate an operation hasunfortunately not been maintained.

Procedure
To create an order without a routing you must define default values forthe generation of operations for order type &V1& in plant &V2&. You dothis in Customizing.
Define default values operation generation