Diagnosis
You selected the 'create order' function for appropriation request &V1&
.
However, no order type is defined in the appropriation request.

System Response
The order cannot be created without an order type.

Procedure
First, enter the order type, with which the order should be created, inthe appropriation request.
After that, you can create the order using the selected function.
Also check the Customizing settings of the appropriation request types,since you can normally enter a default order type there.