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

What causes this issue?

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

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

The system reacts with a termination since you cannot create an order
without an operation and the data required to generate an operation has
unfortunately not been maintained.

How to fix this error?

To create an order without a routing you must define default values for
the generation of operations for order type &V1& in plant &V2&. You do
this in Customizing.
<DS:TRAN.OPJG> Define default values operation generation </>

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.