Only use characeteristics whose value is assigned autom. in the order

What causes this issue?

Value assignment using a characteristic value is only supported if the
characteristic value is assigned automatically in the process order.
However, the value of characteristic &V1& cannot be assigned
automatically in the process order.

System Response

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

How to fix this error?

Depending on your requirements, carry out one of the following steps:
Use a characteristic to which the required value is automatically
assigned in the process order.
If you cannot find a suitable characteristic, choose value assignment
using a fixed value and enter the value you need.

Error message extract from SAP system. Copyright SAP SE.